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309 posts
31 Days Of Derek Hale
31 Days of Derek Hale
Day 18: Cockgrowth
Info â 01 â 02 â 03 â 04 â 05 â 06 â 07 â 08 â 09 â 10 â 11 â 12 â 13 â 14 â 15 â 16 â 17 â 18

Derek was an alpha werewolf, and with that, he was seen as the epitome of lupine masculinity. He towered over the other male werewolves in his pack and his muscles were always larger, more so due to his alpha genetics. He couldnât help but also be turned on by the incredible size difference between himself and his boyfriend, Stiles. Derek was almost two feet taller and almost twice as wide muscular-wise. Derek Hale was an alpha through and through, with one tiny exception.
Derekâs cock was only four and a half inches.
Being below the national average for humans, Derek was humiliated over his subpar size. Over time, heâd fallen into the trope of being the big, mighty alpha who would pick on the smaller guy as a means of compensation for his size. And heâd counted himself extremely lucky that his boyfriend, Stiles, had been a virgin when theyâd started dating, and therefore wasnât really aware of the fact that his boyfriendâs dick was only about one inch away from being considered âmicroâ.
âBabe, do you think Iâm small?â Derek frowned one night, looking down at his tiny dick that barely tented out his boxers.
Stiles, oblivious to his boyfriendâs inner turmoil, simply shrugged. âDonât worry, Derek,â heâd smiled. âYouâre the perfect size for me.â
âThatâs not what I askedâŚâ
One night, Derek had seen a mysterious Internet ad that promised âSignificant Penile Growthâ through some expensive pills. Desperate, Derek had immediately grabbed his credit card and ordered the pills. Once they arrived to his house, Derek wasted no time in ripping the package open and swallowing down a few of the tiny, blue capsules.
After swallowing the pill, it didnât take long for Derekâs tiny cock to go rigid. The pert little thumb was rock hard, feeling as if Derek was harder than ever. His cock throbbed like crazy, and the werewolf barely registered any thought before his hand traveled south to wrap itself around his small cock and begin jerking off.
Derek couldnât help but moan loudly as he toyed with his hard cock, his brain going numb from the pleasure that ripped throughout his muscled body.
Suddenly, Derek felt his fingers steadily start to be pushed apart.
âHuh?â he wondered aloud as he looked down at his cock, his eyes widening at what he saw.
As his cock throbbed, right at the pinnacle of hardness, Derekâs cock grew in both length and girth. As Derek jerked off, his cock would throb and jut further away from his body, gradually growing thicker by the second, causing his grip to loosen.
âHoly shit!â Derek cried with glee as his cock grew. âItâs growing!â
The alpha beamed as he witnessed his little cock go from four and a half inches to five, then six, seven, and eight. It thickened up from thin to the girth akin to a soda can, looking large and powerfulâ just as an alphaâs should.
But then it kept growing.
âUh, th-thatâs enough,â Derek muttered as his cock grew past the nine inch mark, his head almost purple from how hard he was. Precum started to drool out of it like a leaky faucet, and its sensitivity seemed to grow in intensity as did its girth.
Not to be outdone, the alphaâs balls grew in size as well, lowering and thickening to the size of ripe lemons. The thick size of his quads forced Derekâs newly enlarged package to be thrusted forward, his enlarged cock starting to look more like a third arm.
Derek could no longer keep his fingers touching each other, his girthy new cock becoming too large. He had to use his other hand to grip at it, his horniness overwhelming his panic as he jerked off his enlarged cock with both hands. It continued to grow to enormous proportions, finally passing the thirteen inch mark whenâ
âUunnghh!â Derek squealed as he came, his muscles tensing up. His huge balls spewed out a large amount of cum, spraying all over the bedroom. It was significantly more than heâd ever came before, cum splattering everywhere at his feet and creating a mess.
It was such an intense orgasm that Derek was left panting, struggling to catch his breath. His meaty pecs heaving, Derek had to press his hand against the wall to steady himself. Finally softening, his mighty cock dangled past his knees, ridiculously long and thick, much past any reasonable proportions.
âWhat am I supposed to do with a dick this big?â Derek panicked, his eyes wide as he stared down at the massive anaconda that was his cock. Having spent so many years on the other side of the spectrum with a tiny cock, Derek was starting to feel apprehensive about having a cock that was too big⌠if that was even a thing.
His heart raced in his chest as Derek tried to think of ways he could even get dressed with a cock as big as his was now. There was no way he could manage to fit it into his pants, and even if he could, his huge cock and balls would press against whatever fabric dared to conceal it; its outline would be noticeable to anyone he passed by on the street without a doubt. Images of himself walking around in public with his swinging monster cock flickered into his mind, making him blush with humiliation. At least with his tiny cock, no one could see the outline of his dick through his pants. Now he doubted that any of his pants would even fit him in the first place!
Derekâs shaky hand gave his newly enlarged cock a tentative poke, and his knees buckled at the tidal wave of pleasure that rippled through him at that mere touch. âOohh,â Derek moaned loudly as his cock rocketed to its full thirteen inches again, looking as thick as his muscular forearm. His head seemed as large as an apple, and it flushed as his cock throbbed with want all over again.
As Derek worried about his new girth, he didnât hear Stiles walk upstairs and enter the bedroom.
âHey, Der, can I borrow your chapstickâ holy shit!â he gasped in utter shock when he saw the sheer size of his boyfriendâs cock. He wouldnât admit it aloud, but the first thing that he thought was that there was no way heâd be able to fit that thing inside of him.
âOh, uh,â Derek blushed, his enormous cock throbbing in front of him. When he turned to the side, it was so large that it knocked over some of the objects on the nightstand, causing them to clatter loudly to the floor. âI just took a pill that said that itâd make me bigger, but I think it worked a little too well.â Despite his panic, Derekâs hard cock twitched as he looked over at his boyfriend, the thirteen inch monster aching with intense want.
âI, uh, I see that,â Stiles mumbled, unable to look away.
Derek scratched at the back of his head nervously. âDo you think you could help me out with this?â he asked, gesturing down at his massive cock. âItâs a bit unwieldy.â
âI donât think thatâll fit,â Stiles admitted, âbut I could try to jerk it off for you?â
Derek took what he could get, and hurried over towards Stiles, his giant cock bobbing wildly in front of him with every step.Â
Stiles reached over and grabbed Derekâs large cock with both hands, loving how Derekâs head rolled back as he moaned with pleasure. Thanks to its exaggerated size, Stiles couldnât wrap his hands around it all the way, so he was left to gripping it as best as he could, having to jerk it off with both of his hands. The head was much too large for Stiles to suck on, but he still leaned forward and playfully ran his tongue over the head, pausing to flick his tongue over the sensitive slit.
The whole time, Derek was rendered a lustful mess. He couldnât prevent his loud moans from echoing throughout the bedroom, his large cock being extremely sensitive. His eyes rolled to the back of his head, and all of his thoughts turned to mush as he was pleasured. His boyfriendâs hands on his dick was brining much more pleasure than any sex that theyâd ever had before, and already Derek was thinking of how his sex life would be different. Given his cockâs new massive size, he knew that heâd be rendered to being jerked off or rutting against Stiles from now on, or even bottoming every now and then.
Derek tensed up as he came, blowing the largest load of his life, leaving him spent and panting. The force of his orgasm left Derek leaning against the wall as he tried to catch his breath. âDamn,â he breathed, âthatâs new.â The alpha werewolfâs large cock dangled soft past his knees once more, and as his head started to clear, all he could think about was how much more of an alpha he mustâve looked like given his enormous cock that easily out-sized any other alphaâs.
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More Posts from Ultram0th
31 Days of Derek Hale
Day 24: Cow
Info â 01 â 02 â 03 â 04 â 05 â 06 â 07 â 08 â 09 â 10 â 11 â 12 â 13 â 14 â 15 â 16 â 17 â 18 â 19 â 20 â 21 â 22 â 23 â 24

Derek grimaced as he swallowed down the odd tasting protein shake. âThat tastes weird,â he spat. âWhatâs in it?â
Theo shrugged his shoulders. âItâs a new recipe Iâm trying out,â he answered, smirking slightly.
The werewolf and the chimera had been trying to work more closely together, for the sake of the two packs in Beacon Hills. As a result, Derek and Theo would try to be more cordial with one another. One such activity that the two pack leaders actually didnât hate to do together was work out at the gym. There was a sort of playful rivalry that the two engaged in, always trying to out lift the other as they worked out, trying to get more gains.
Being an alpha werewolf, Derek easily out lifted Theo and his muscles were way larger by comparison. The chimera, on the other hand, tended to stick with a more toned physique, not allowing any of his jealousy to show on his smiling face.
Which was why he was all smiles as he offered Derek a drink of his own secret concoction. The mischievous chimera had fought hard to hide his triumphant grin as heâd watched Derek take a hesitant sip of the âprotein shakeâ.
Derek still wiped at his mouth with disgust at the horrible shake that Theo had offered him. âYeah, I think Iâm gonna stick to my usual,â he huffed. âThanks though.â
Again, Theo shrugged. âSuit yourself,â he happily hummed.
The two men went to starting their workouts, Theo keeping a careful eye on Derek.
Derek, oblivious to the chimeraâs staring, went to the chest fly machine, racking up a ton of weight before performing reps. As he worked out, he noticed an odd tingling sensation in his pecs that wasnât like the normal burn that heâd expected. Instead, this one felt almost electrifying and oddly⌠good. Really good.
Derek blushed slightly as his chest tingled, his nipples feeling as if they were hardwired directly to his cock. His cock started to stiffen up in his shorts, and as he continued to perform reps, Derek had to hold back a moan.
âMmmm,â Derek moaned as he tried his best to keep his lips pursed. His blush deepened when he looked over and caught Theo staring.
The alpha werewolf quickly diverted his gaze and tried his best to continue his workout.
Derek was trying so hard to ignore the odd sensations emanating from his pecs that he hadnât even registered the growing tightness of his shirt until he heard a loud rip echo throughout the nearly empty gym.
He let go of the weights, letting them bang loudly back to the machine. Cocking his eyebrow, Derek looked down at himself, gasping loudly at the large pecs attached to his chest.
âM-my pecs!â Derek stuttered out of shock. âTheyâre huge!â
Staring downward, Derekâs previously proportional pectorals had been wildly inflated. They jutted out dangerously from his chest, looking round and bulbous. It looked like someone had sliced a soccer ball in two, glueing both halves onto the werewolfâs hairy chest, looking incredibly out of place on his muscular body. Worse for Derek was that his nipples had even enlarged, growing thicker and protruding off of his massive chest like nubby fingers.
Derek blushed when he squirmed in his seat on the machine, feeling how much his chest bounced and jiggled. Oddly, his pecs felt so heavy and cumbersome, and when he moved, he felt an odd sensation of something sloshing deep inside of them.
Theo snickered as he looked the top-heavy alpha up and down. âIâd say so,â he teased. âThose are some serious udders youâve got there, Derek.â
Derek shoved himself away from the pec fly machine and hurried towards the privacy of the locker room. As he moved, he noticed the arched back stance that he had to take in order to accommodate for his inflated pecs. This caused the enlarged mounds to be thrusted outwards and more into the open, being impossible to conceal. They bounced and jiggled with every step the frantic alpha took, that sloshing sensation growing in fervor.
When he reached the locker room and stared into the mirror, Derek paled at his warped reflection. His pecs and nipples were huge, easily out-shadowing the rest of his impressive musculature, every other body group looking like an afterthought. His jaw dropped, resting upon the cresting pecs that were pushed upwards and out.
Theo, a devilish smirk still plastered on his face, sauntered into the locker room. He crossed his toned arms over his proportional chest as he studied Derek. âThey donât look that bad, Derek,â he snickered. âMaybe we can get you a bra?â
The color gradually returned to Derekâs face as he turned red, slowly putting the pieces together. âYou did this to me?â he accused, gesturing down at his massive chest.
âDuh,â Theo scoffed. âI grew tired of always being the small one, so I did some research and found that a really good growth formula contains alpha milk. Hence, all I needed to do was get you to produce some.â
ââAlpha milkâ?â Derek repeated, looking down hesitantly at his large pecs, frowning when he couldnât anything past their bulbous size.
Theo walked over and didnât give the alpha any warning before he reached around and grabbed Derekâs meaty pecs.
âOohhh!â Derek couldnât help but moan as his muscletits were fondled. Despite his panic and frustration over having his chest altered, he couldnât ignore the surge of pleasure that rippled through him. In addition to increasing in size, his pectorals also drastically increased in sensitivity. Every touch from the other manâs hands lit up pleasure receptors that Derek had never had before. His knees buckled and his head rolled back as he was felt up. No amount of sex or playing with his cock could ever compare to the brilliant sensations on his chest, and deep down, Derek felt himself craving more.
Theo began to thumb Derekâs nubby nipples, and the werewolf felt as if heâd explode at any second. His heavy pecs lurched and he felt that sloshing inside of them grow even more; and Derek swore that his pectorals began to feel slightly larger.
Derek tensed up, shooting his load. However, instead of cumming, his nubby nipples squirted out a white substance. The pressure in his muscletits subsided the slightest bit, but Derek felt something else bubbling deep within him. He tried to swallow it down, but the alpha werewolf couldnât help himself.
As his nipples leaked, Derek bellowed out a deep, âMoooo!â
He was so caught up in the feeling of pleasure that left tingles all over his skin, especially his burning nipples, that Derek didnât even have time to feel humiliated over that fact that heâd mooed like a cow.
Meanwhile, Theo strategically placed his bottle under the alphaâs leaky nipples, collecting the milk that had seeped out. Placing the cap on it, he grinned widely.
âWeâll have to do this more often, Derek,â he happily said. âThereâs a lot of guys out there whoâd give a fortune for some alpha milk so that their muscles can grow bigger. And just think, itâs all thanks to you and these udders of yours.â
Derek wanted to be angry, to lash out at the chimera for turning his pecs into large muscletits. However, Theo reached out and teasingly flicked a protruding nipple, causing a lustful haze to cloud over Derekâs mind.
âMooo!â Derek bellowed again, his giant pecs jiggling with want.
31 Days of Derek Hale
Day 27: Hot Cop
Info â 01 â 02 â 03 â 04 â 05 â 06 â 07 â 08 â 09 â 10 â 11 â 12 â 13 â 14 â 15 â 16 â 17 â 18 â 19 â 20 â 21 â 22 â 23 â 24 â 25 â 26 â 27

âWell, well, if it isnât none other than the infamous Derek Hale,â Sheriff Stilinski sighed as he sat down in the driverâs side of the cruiser.Â
Derek just glared silently back through the fence-like barrier that separated the two of them. He huffed angrily through his nostrils, keeping his lips pursed to avoid making the situation any worse for him. The young man wasnât unfamiliar with Sheriff Stilinski, often running afoul with the old man here and there. It wasnât that Derek was a career criminal by textbook standards, but he admitted that he didnât make the best choices. Thus, he had a sort of negative reputation around Beacon Hills, with most of the sheriff department keeping a watchful eye on him.
The cruiserâs engine roared alive, and the Sheriff drove down the road towards the station.
Derek silently steamed in the backseat, perfectly content with not saying a single word.
However, the Sheriff cleared his throat and eyed the werewolf in the rearview mirror. âYou know, Derek,â the Sheriff said, his rough voice taking on a kind air, âIâd promised your family that Iâd look after you. But for some reason, you just canât seem to keep your nose outta trouble.â
Derek just grunted, rolling his eyes. He tried to tune out the cop and focus on the woods outside the window.Â
The Sheriff continued though. âAnd,â he pressed, a different tone overtaking his deep voice, âIâve seen you eying my boy.â
Derek winced and fought hard to maintain his cool, but he could tell that he looked worried as his bushy eyebrows knitted together. Of course he found the Sheriffâs son, Stiles, attractive and it was true that heâd been trying to court him; however, he hadnât counted on the old man being that perceptive.
âWhat are you talking about?â Derek tried to play it off, his heart starting to race in his chest.
The Sheriff lowly chuckled. âDerek,â he said, clicking his tongue, âI have my own skills, too. And letâs just say that although I like you and your family, Iâm not too happy to have someone like you following my son around.â
Being used to being seen as less, Derek snorted and prepared a sharp retort. However, when he opened his mouth, his eyes widened when no sound came out. He cleared his throat and tried again, but not matter how hard he tried, the werewolf couldnât utter a noise. He felt his heart start to race in his chest as he tried with all of his might to make the slightest bit of noise. However, every single attempt was futile.
The Sheriff smirked back at the struggling werewolf in the rearview mirror. âBut you donât have a job right now, do you Derek?â he pressed, an odd happy quality to his voice.
âNo, Sir,â Derek felt himself respond without thinking. He wondered what was going onâ why he could only seem to speak when the Sheriff allowed him to, and why heâd called him âSirâ.
âThatâs a shame,â the Sheriff added. âYou were always so cheery and polite. I wouldâve figured youâd be the star employee somewhere by now.â
Cheery and polite? Sure, Derek wasnât a blatant asshole, but neither of those adjectives described him in the least.
âThank you, Sir,â Derek heard himself reply again. âI always do try my hardest, but gosh darn, the job market is tricky.â The werewolfâs stomach fell as he heard himself speak in such a dweebish tone. He tried to force himself to cuss out the sheriff, but as soon as the words were almost on his tongue, theyâd fled.
The Sheriff cleared his throat and went on. âWell, if youâre interested, the police academy is always taking in new recruits. I think youâd be a good fit.â
Derek wanted to decline immediately, hating the idea of seeing himself strutting around Beacon Hills as some police officer who acts all goody two-shoes and whatnot. âThat sounds like an awesome idea, Sir,â Derek happily agreed, and he felt his face stretch out into a giddy smile. He spotted his own reflection in the rearview mirror and inwardly flinched at how dorky he looked being all smiles; however, his attention was quickly diverted when he noticed something else.
Derekâs eyes widened even further when he saw that his jeans and white tank top had completely disappeared from his body. As quickly as his old clothes had vanished, new ones reappeared in their stead. Navy blue khakis were tightly wrapped around his powerful legs, looking almost skintight and like there was barely any extra room in there. His torso had on a navy blue, button down shirt that had the patches of the Beacon Hills Sheriff Department sewn onto the short sleeves. Right above the right pocket was a small silver name tag that read out: âHALEâ. A black belt appeared around his waist, equipped with all of his police equipment that heâd need for his new job.
Derekâs smile faltered for a brief second before it took over once again. âThank you, Sir,â he grinned. âIâve always wanted to be a cop ever since I was a kid.â
The Sheriff nodded. âI know it, Derek,â he hummed. âI can tell by the way youâve dedicated yourself to fitness.â
Before he could ponder over what that meant, Derek felt all of his muscles tense up simultaneously. The first thing Derek noticed was his thighs steadily growing larger and rounder, closing the gap between them little by little. However, his line of sight was soon cut off by his growing chest muscles. His pecs inflated and pushed outwards, taking up the remaining room in his shirt until it was skintightâ POP! The top two buttons of his police shirt popped off, revealing the new, deep pec cleavage he now possessed. His arms grew in size, his biceps inflating to the size of melons as they bulged with power out of his short sleeves. They rested on flaring lats, giving the werewolf a broad appearance that reeked of masculine power. When he looked back into the mirror, Derek saw his neck steadily broaden in tandem with his shoulders, effectively giving him the appearance of a bodybuilder in a police uniform.Â
His heart raced in his inflated chest, but instead of voicing his panic, all Derek could say was, âThat you, Sir. Last weigh in, I came in at three-hundred pounds of solid muscleâ all for the good of protecting my community.â
The station came into sight and the Sheriffâs own smile dominated his older face. âThatâs the right attitude to have, Derek,â he said. âI know youâll be a great man of the law.â
Derek felt his old self starting to slip, quickly being dominated with the muscled Dudley Do-Right cop heâd been turned into. He grit his teeth to prevent the change from taking over, but it was futile. In a matter of seconds, the old trouble-making Derek Hale was quickly replaced with Deputy Hale: the bodybuilding cop who was as straight-laced as they came.
Derekâs smile grew even more, genuinely this time, as he noticed the station as the Sheriff parked in front.
Derek exited the back of the cruiser, unsure why heâd decide to ride in the backâ he probably lost a dare and was playing around with Sheriff Stilinski. The older man was like a father to him, and Derek respected him with every fiber of his being. As soon as the new cop took a step out of the cruiser and felt his large thighs rub against each other and noticed how heavy his pecs and arms were, he cocked his eyebrow in confusion for a moment. Maneuvering around felt awkward, almost as if he was getting used to strutting around in such a muscled body.
Derek snorted and shook his head, knowing that was ridiculous. He worked out religiously and was always super muscled, easily dwarfing all of the other men on the force.
The muscled policeman waddled up to the station, but froze when he saw the Sheriffâs son, Stiles, hanging by the entrance. He felt his heart race in his beefy chest and blush form on his face over how cute Stiles looked.Â
âOh, um, h-hi there, Stiles,â Derek gushed, looking like some lovestruck dork in front of the station for all to see. âWhat brings you here?â
Stiles paused for a moment, his own eyebrows furrowing for a second. âI came to see my dad,â he mumbled, his eyes running up and down Derekâs bulging form, making the copâs heart race even faster. âDerek, d-did you⌠um, this might sound weird, but you look different for some reason. I canât put my finger on it.â
This time, Deputy Derek shared Stilesâs confusion, and for a flash, the way his body felt so heavy and the sensation of his skintight uniform on his muscles felt all too wrong. However, just as quickly as the feeling had occurred, it evaporated into thin air and Derekâs smile widened even more.
âI just got back from the gym,â he happily gushed, raising both of his powerful arms above his head to form a double biceps pose. The movement caused his massive biceps to curl completely out of his sleeves and bulge with power. âItâs probably the pump youâre noticing.â
Stiles blushed a little as he stared at Derekâs huge muscles. âYeah, I guess thatâs it,â he admitted.
Not wanting to waste any time, while still flexing, Derek blurted out, âWant to do something this Saturday?â he asked. â⌠with me? Please?â
Stiles wanted to argue, to say that something was definitely different about Deputy Hale. However, his memories seemed to recall seeing the muscled up cop working shoulder to shoulder with his father for quite some time. âSure,â he finally agreed.
Deputy Hale dropped his arms, letting them rest atop his lats a near right angle. âG-great!â he eagerly stuttered, the giddy new deputy over the moon at the prospect of finally taking the Sheriffâs son out. âIâll pick you up at seven!â
31 Days of Derek Hale
Day 26: Twink
Info â 01 â 02 â 03 â 04 â 05 â 06 â 07 â 08 â 09 â 10 â 11 â 12 â 13 â 14 â 15 â 16 â 17 â 18 â 19 â 20 â 21 â 22 â 23 â 24 â 25 â 26

Derek bumped into some small, tiny guy. The little guy wore comically oversized clothes as he ran off, looking panicked and frightened.Â
âFuckinâ weirdo,â Derek snorted, readjusting his gym bag over his broad shoulder.Â
The 6â3â alpha sauntered into the gym to workout. Normally, the muscled stud preferred to lift or perform bodyweight exercises at home where he wouldnât have to deal with a lot of people. However, after renovating his house, he didnât want to mess it up with his musk, so heâd opted to get a gym membership. After a few weeks of working out at one of the local gyms, Derek was surprised to discover that he actually liked to work out in public. There was something about being one of the bigger guys at the gyms that filled him with a sense of pride. Towering over the other men and easily out-muscling them only cemented his role as an alpha, and Derek could only smirk as he threw his weight around the gym.
After changing in the locker room, Derek strutted out onto the gym floor clad in only tight gym shorts that strained against his powerful thighs. His impressive chest muscles were on full display as he moved towards the weight pile. His chiseled, plump pecs illustrated sheer masculine power, and Derek frowned a bit when he realized that the gym was virtually empty.
âGuess the other guys just canât keep up,â he hummed to himself, grabbing the heavier weights on the rack and performing bicep curls like it was second nature to him. His bowling ball-sized mounds flexed with power as he lifted, and Derek couldnât help but admire his bulky form in the large mirror.
Derek was so caught up in working out that he barely noticed when another gym patron walked up to the weight pile, grabbing a weight that was a little heavier than Derekâs.
This other guy rivaled Derekâs size, both in height and musculature, much to the alphaâs annoyance. This other guyâs thick curly hair reached the same exact 6â3â height as did Derek; that fact bothering Derek for some inane reason. Plus, this other guy also worked out shirtless, showing off his pumped up muscles that exuded manly power. His chiseled pecs were just as rounded as Derekâs, and when he lifted his weight, his bicep bulged to the same exact size Derekâs had.
The other guy glanced towards Derek and nodded at the lighter weight in his grasp. âMy girlfriend likes to use the smaller weights too,â he chuckled.
Derek bristled at the obvious attempt to make him look weaker than the unknown douchebag. He just clenched his jaw as he set the weight down, opting for an even larger one than the other guyâs. Gritting his teeth, he began to rack out several bicep curls.
The subtle way the other manâs eyes widened caused the alpha to smirk, loving how his bicep pumped up to an incredible size. The arm burned with lactate and he could vaguely make out the other guy muttering something under his breath, yet Derek was too focused on trying to look like the bigger man.
Derekâs muscles burned from his workout, the burning sensation seemingly spreading throughout the rest of his body from his arm. The immense weight in his hand steadily felt heavier by the second, Derek chalking it up to reaching muscle failure. He thought that it was odd that heâd reached it in under a minute since he could usually lift heavy amounts of weight for a substantiated amount of time.
Derek grunted as he attempted to perform one more rep, yet his arm started to shake and he ultimately dropped the weight, letting it clang loudly onto the floor.Â
The guy chuckled again, and clapped Derek on the bare shoulder. âDonât worry, Little Guy,â he teased, âthereâs no shame in starting off with the smaller weights. We all gotta start somewhere, right?â
Derek swallowed down a growl and instead tried to glare threateningly at the other guy to get him to leave him alone⌠but he stopped when he stared directly at the dudeâs chin. Earlier, Derek couldâve sworn that theyâd stood eye to eye.
Derekâs eyes widened when he witnessed the other guy actually growing. As impossible as it seemed, the other gym goer sprouted up in height, his muscles also packing on some serious size. His pecs plumped out even more and his arms took on some more consider meat.Â
âWhat the fuck?â Derek muttered, freezing when he heard his voice. It was void of any baritone, making his voice sound lighter and almost squeakier, as if it had shot up a few octaves.Â
Then the horror slowly dawned on Derek that the other guy wasnât just growing, but Derek was also shrinking.
Derek watched as his line of sight kept slipping lower and lower, until he was staring directly at the other manâs plump pecs. It didnât stop there though, as all of Derekâs muscles began to deflate.Â
âWhat the fuckâs happening to my muscles!?â Derek squeaked out in his smaller voice, holding his arms out in horror as his biceps steadily grew flatter.
Derek was helpless to do anything except watch as all of his hard-earned muscles grew flatter and near nonexistent. His arms shrank until they looked like unremarkable sticks, lacking any bulges whatsoever. His pumped up pectorals gradually flattened as they shrank against his chest, looking smaller and smaller until his entire torso was flatâ lacking major pecs or even any abs. Even his legs thinned out as quads and calves deflated, growing smaller until Derek had little twigs to stand on.
To add insult to injury, Derek paled as he squirmed and felt an uncomfortable bagginess in the front of his boxers, the front of his shorts looking flat.
When he was finally done shrinking, Derek stared at his skinny body in shock and horror, estimating that he mustâve lost well over fifty pounds of pure muscle, and that he had to have stood at a measly 5â3â now.
âWh-what did you do to me?â Derek roared, but his lighter voice didnât hold any sort of threatening quality to it at all. In his frustration, he tried to charge forward and pummel the now larger man, but as he swung his tiny fists at the manâs massive bulk, the other guy didnât seem phased.
The big gym bully just snickered. âSorry, Little Man,â he scoffed, gently shoving Derek away, yet the incredible difference in strength sent the tiny alpha stumbling backwards until he fell on his tiny butt with a thud. âThereâs only room here for one gym alpha.âÂ
To illustrate his point, the larger man lifted his powerful arms and flexed his massive biceps which flexed to the size of small melons, easily out sizing Derekâs tiny stick-like arms.
Out of humiliation, Derek took off, sprinting out of the gym in a frenzy, embarrassed at how there was a lack of dangling sensation between his legs. He hurried into his Camaro and nearly wailed as he had to readjust his seat closer to the wheel because his shortened legs couldnât reach the pedals.
As the tiny man sped off, a large bodybuilder entered the gym, his large muscles oddly already starting to burn the second the stepped foot insideâŚ
31 Days of Derek Hale
Day 25: Roided
Info â 01 â 02 â 03 â 04 â 05 â 06 â 07 â 08 â 09 â 10 â 11 â 12 â 13 â 14 â 15 â 16 â 17 â 18 â 19 â 20 â 21 â 22 â 23 â 24 â 25

[Base Photo Source: https://www.deviantart.com/bbbelly/art/What-did-you-do-again-337582411]
Original Artist here: BBroidbelly
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The host, Matthew Johnson, walked back onstage, eliciting thunderous applause from the crowd. He was a handsome man dressed in pristine white clothes that were tailored to tastefully show off his muscled body.
âWelcome back everyone to The Matthew Johnson Show,â the host smiled to the live studio audience. âWe are continuing our series called âLiving with Cursesâ. Just last week, we chatted with Scott, the man cursed to shrink down to only five inches tall!â
The audience roared with laughter at the memory of the pipsqueak Scott.
âBut today,â Matthew continued, âwe have another man here whoâs been living with a curse for about two months now. And unlike Scott last week, this curse has caused this man to grow! Everyone, please welcome to the stage: Derek Hale!â
A stunned silence blew over the crowd as Derek Hale walked onto the stage⌠well, more like waddled onto the stage.
Derek Hale was a massive muscle monster! That was putting it lightly too, because the stud was insanely large. Almost as wide as he was tall, Derek looked like he was struggling to lumber around. His thighs were about as thick as the hostâs waist, and they rolled over one another with every step the bulky man took. They pressed against each other, causing the man to have a wide stance. A bulbous roidgut protruded out in front of Derek, making him look almost pregnant with how massive it was. It was round and didnât jiggle at all, indicating that there wasnât a trace of fat on his over-muscled form. His pecs were huge and round, and they rested on top of his gut; large, nubby nipples poked noticeably against the tight t-shirt that struggled to contain Derekâs bulk. His back was wide and his shoulders were insanely broad, having to be large enough to carry his enormous arms. Biceps the size of Derekâs head tore through the tight sleeves of his shirt, pressing against his flaring lats that caused his arms to hang at ninety-degree angle.
Derek was so large that he made Matthew look puny by comparison. He was larger than any other bodybuilder that had ever been on TV, and he had such an enormous gut that it seemed to be the epicenter of his growthâ being the largest part of him.
As he moved, the hunk breathed heavily and blushed bright red as the stage lights were on him, broadcasting his enlarged form to all of American daytime TV.
Matthew handed Derek a microphone, and the muscled up guest struggled to bend his massive arm enough to bring it up to his mouth, the movement causing his bicep to flex with power.
âWelcome to the show, Derek,â Matthew said. âNow, let me try to understand this: You werenât this muscular two months ago, were you?â
Derekâs blush deepened and he shook his head. âNo,â he grunted in a deep voice that was full of baritone.
On the screen behind the two men appeared a picture of Derek before he was cursed, showing off a toned man that was about a third the size of the swollen bodybuilder onstage.
âYou where what, one-hundred eighty pounds in this picture?â Matthew pressed, gesturing towards the image on the screen. âAnd now you weigh how much?â
Derek took a hesitant look over at the audience, thankful that the positioning of the stage lights prevented him from making out any faces. He was beyond humiliated standing up on stage in his overgrown bulk, but after running out of ideas and failed spells from Deaton, it was his last hope at returning to his usual size.
âUm,â Derek mumbled nervously, âI weigh three-hundred seventy-nine pounds nowâŚâ
A loud gasp ran through the audience.
âAnd tell us, how did you get so big?â Matthew asked, placing a sympathetic hand on Derekâs broad shoulder. The size difference between the two made Matthewâs hand look utterly tiny.
Derek sighed loudly, the movement causing his massive shoulders to rise and fall, his shirt seams groaning at the movement. âI was at the gym and got into an argument with some guy,â Derek growled, anger written all over his face as he remembered what had happened. âWords were said, and I called him a âRoided-Up Freakâ. Then he snapped his fingers, and wellâŚâ Derek gestured downwards at himself.
Matthew nodded quietly, and then perked up. âAnd I understand that your boyfriend, Stiles, has stayed by your side this entire time?â
The audience let out awwâs and coos.
Derek nodded as best as he could due to his huge traps swallowing his neck. âYeah,â he said. âHeâs⌠my rock.â He admitted it, his heart racing over how grateful he was for Stiles.Â
Like Derek, Stiles had been freaked out too when Derek had turned into a roid-loving bodybuilder. Heâd tried his best to find spells to turn him back to normal, or at least find clothes big enough to fit over his unwanted bulk. However, unlike Derek, Stiles quickly came around to his boyfriendâs new appearance. He would run admiring hands over Derekâs inflated pecs or marvel over how he couldnât fit hit hands even halfway around Derekâs biceps⌠and despite being annoyed, Derek would be lying if he didnât admit that deep down that he loved having Stiles worship his muscles.
However, despite how great life was with Stiles, Derek was still irritated over his bulky body ruining his life. He couldnât fit in his prized Camaro anymore. His gut and pecs were too big and they constantly pressed against the horn. Plus, his back was so wide that he couldnât even close the door thanks to how broad he was. Speaking of doors, it took all of Derekâs cleverness to squeeze himself through any standard-sized one. He always had to go through them sideways thanks to his broad shoulders, but it was always a struggle fitting his roidgut and pecs through the doorway. All of his clothes were now XXXL, and they always looked like they were painted on. Even sleeping was struggle too! Whenever he lied on his back, Derekâs huge back muscles kept his head elevated above his pillow. He couldnât lie on his side, not with his large arms and lats. His gut and pecs were too big to try sleeping on his front. He had to position pillows and blankets carefully around his body in order to get comfortable. But his large body left zero room for Stiles, forcing the tiny human to sleep completely on top of Derekâs large muscles⌠but Derek secretly liked that part of the curse.
As the show went on and Derek answered the hostâs questions, a loud ripping noise echoed out.
âOh noâŚâ Derek groaned as his shirt finally lost its battle trying to conceal his bulk. The collar split right down the middle of his pillowy pecs, traveling downward to his gut. His sleeves burst to shreds over his enormous biceps, leaving the large bodybuilder completely topless. Derek blushed, and then winced when he heard another loud tear, this time his huge glutes bursting through the back of his tight pants. Now that he was exposed, his vascular form was on full display, showing off the radiating veins all over his huge physique.
Matthew mock frowned, yet the audience erupted into a fit of laughter, making Derek blush even more.
âWell, Derek,â Matthew said, âwe looked into your curse to see if we could help you at all. And guess what? We can.â
Derek perked up a little, hopeful at returning to his normal body after months of being trapped in an overblown, roided-up bodybuilderâs body. âR-really?â he asked, hopeful.Â
Matthew reached into his back pocket and handed Derek a card. âYes, Big Guy,â he smiled. âThis here is a fifty dollar gift card to Mensâ Big and Tall. They have all sorts of styles designed specifically for large, bulky men such as yourself.â
Derek frowned as he snatched the gift card away from the host.
Matthew turned back to the crowd. âAnd coming up after our break, a man whose voice sounds like a chipmunkâs! That and more on The Matthew Johnson Show!â
Derek waddled off the stage, grumbling angrily to himself the whole time. Heâd just embarrassed himself on TV for a stupid gift card. âI hope his shit show gets cancelled,â he muttered to himself as he walked backstage towards a waiting Stiles.
Stiles looked up at his inflated boyfriend sympathetically. âSorry Derek,â he frowned. âI thought that itâd help. I mean, it looked like he helped people whenever Iâd watch him on TV.â
Derek huffed and had to take a step backward so that his protruding pecs werenât blocking his view of Stiles. âYeah, who wouldâve guessed that people lie on TV?â he rolled his eyes.
Stilesâs frown lightened up the smallest bit. âWell, I mean, if you are stuck as a big bodybuilderâŚâ he led, looking at Derek with a hopeful expression.
Derek sighed, but forced a grin on his face as he lifted his muscled arms as best as he could, forming a double biceps pose. âWanna feel, Little Man?â he asked the usual line that had become a staple in their bedroom activities.
Stilesâs smile grew. âYes, please.â
Derek couldnât help but smile back, reaching over and tossing Stiles over his broad shoulder with ease. âI could get used to this, I suppose,â he shrugged to himself as he waddled off, loving how small his boyfriend felt against his bulk.
31 Days of Derek Hale
Day 09: Merge
Info â 01 â 02 â 03 â 04 â 05 â 06 â 07 â 08 â 09

âYouâre the worst alpha Iâve ever had!â Peter yelled, throwing his hands up in the air dramatically.
Derek snarled in response, baring his massive werewolf fangs. âI wouldnât have to be so hard on you if you werenât so damn stupid!â he countered.
The two werewolves continued to argue and yell at each other, their bellowing voices echoing throughout the house and making peace nearly impossible.Â
Meanwhile, Stiles rubbed at his temples in irritation as he tried to read some articles for his college classes, irked that he couldnât get any studying done with the werewolvesâ dick measuring contest going on in the background. Worse was that ever since Peter miraculously came back from the dead, he and Derek seemed to be at each otherâs throats constantly.
âYouâre the most selfish member of the pack!â Derek growled, puffing out his chest as he tried to threaten the older werewolf. âI shouldâve kicked your ass out a long time ago!â
Peter, being the drama queen that he was, rolled his eyes exaggeratedly. âOh please, Pup,â he spat. âYou have no clue what the hell youâre doing. Shit, your little pack would fall apart if it wasnât for my help.â
The two men kept yelling at each other, ruining any semblance of tranquility as they puffed out their chests in what could be described as a âBro Offâ. Both of them would bark and yell, yet neither one of them dared to throw the first punch.
Finally, Stiles slammed his book shut, over their childish behavior. âWill both of you shut the fuck up?!â he cried.
Derek and Peter both froze to stare at him in bewilderment.
âHe started it,â Derek muttered, gesturing at Peter heatedly.
âI donât care who started it!â Stiles exclaimed. âWeâre all in the same pack, so if the two of you could figure out a way to be closer, thatâd be perfect!â
As soon as the words left Stilesâs full lips, an electric quality appeared in the air, making the hairs on the werewolvesâ arms stand at attention. Before anyone could ask what was going on, Derek and Peter felt themselves moving towards one another, their limbs acting on their own accord.
Against their will, Derek and Peter both raised their arms and seemingly embraced one another in a hug, the two of them wearing worried expressions on their handsome faces as they desperately tried to regain control of their bodies. Even Stiles was shocked, his jaw hanging low as he watched the two werewolves hug one another.
Then something else happened.
Derek was the taller one, and it seemed as if Peterâs smaller (yet still muscled) body melted into Derekâs larger one. As the werewolves merged together, their muscles appeared to combine, becoming larger and much more defined. Their arms combined, becoming larger with much bigger biceps than before. Pecs protruded out in front of their bodies, capped by large, nubby nipples that were twice the size of their respective ones. Even their clothes seemed to merge together, taking Peterâs blue button down and Derekâs white tank, morphing them into a blue and white muscle tank top that served to show off their large muscles.
Derek and Peter were stunned silent as their heads positioned themselves upon broadened shoulders, sitting side by side.
When the changes finally ceased, standing where the two werewolves previously argued with one another, was a two-headed muscle beast. Derek and Peter stared in shock and horror as they used the buff arm that they could control to feel around their shared body, blushing when they could feel the exact same sensations.
âWh-what happened to us?!â Derek panicked, taking an awkward step forward as if he could pull himself away from his shared body. All that served to do was make his new body stumble, Peter in control of the other leg.
Even Stiles was stunned silent, unable to wrap his head around what was happening. Moments before, Derek and Peter had been arguing, and then they were sharing a body that was twice the size of their normal ones.
Peter felt around his shared body in disbelief, bristling when he noted the obscene size of his enlarged muscles. âH-how did this happen?!â he gasped, unable to wrap his head around the fact that he and his nephew shared an over-muscled body.
Stiles shook his head in disbelief. âAll I meant for you two to be closer, not this!â he hurriedly cried.Â
The two-headed werewolf struggled to stalk forward, each one of them using the leg that they controlled.
âYou better figure out a way to fix this!â Derek growled. âHow the fuck can I be expected to perform my alpha duties with this dumbass attached to me? And how can I be expected to be with my boyfriend when Iâm sharing a bodyâŚâ He trailed off when his thoughts were clouded over with Peterâs.
Derek turned his head to glare at Peterâs, who attempted to look away, but given their unwanted proximity, the attempt was moot.
âReally?â Derek growled, anger bubbling up in his gut.
Peter blushed, but tried his hardest to look unbothered. âHeâs kinda cute,â he muttered under his breath, referencing his secret crush on Stiles, which Derek could pick up on thanks to their shared body.
Both of the werewolves flinched when they felt a throbbing in their pants. They each used the arm they controlled to yank down their pants, revealing the twin cocks that they possessed. Both of the impressive members stood at perfect attention, directed straight towards the shocked human.
Derek and Peter sniffed at the air, surprised at the heat radiating off of Stiles.
âReally?â they both asked in unison, shocked at the fact that Stiles seemed to be turned on.Â
Stiles shrugged cheekily. âWell, I love Derek, but I also think that Peter is hot, in a weird sorta way,â he admitted, blushing.
Derek and Peter sighed, their shared shoulders rising and falling with the action.
Derek used his arm to scratch at the back of his head. âWell,â he mumbled, âI guess we could try to make this workâŚâ
Peter looked downward at the two cocks that were attached to his and Derekâs shared body. âI hope that Stiles can take two at a time,â he said.
Stiles eagerly nodded. âI can look up some stretches!â he rushed, already looking forward to getting fucked by his new two-headed boyfriend.