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ultram0th · 1 day

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How about one where a frat boy turns into a lazy, slobby stereotypically dad. Maybe muscular but with a beer belly and barking out orders to his old frat bros. But instead of bringing him a beer, it's to suck his massive cock while he watches sports or Nascar.

When Coach told all the frat boys at the start of the year that he was giving up his position, most of them had scrambled for the opportunity to be the proverbial "Top Dog". The older man had commanded the respect of the numerous frat bros, each one looking up to the older man as one of their own-- and he must have been back in his prime. However, after years of no longer playing sports and drinking, the older man had gained a big belly and a layer of fat that covered his impressive musculature. Instead of looking like a strict athlete, Coach looked like a burly musclebear.

And when he'd announced that Trevor, the newest recruit on the baseball team, was going to be taking his place, the young jock had been ecstatic.

Trevor was brand new to the university and the fraternity, and although he was the smallest, he still had rather sizable muscles. The stud opted to go for a toned aesthetic, his trimmed bulk looking like it was ripped out of an Abercrombie & Fitch ad.

Some of the other jocks muttered under their breath, jealous that they weren't getting picked. Whereas others were fighting back laughs because Trevor was still brand new, and therefore didn't realize all that the position entailed.

Trevor proudly stood before the rest of the fraternity, puffing out his chest with pride. Coach took off his baseball cap to place it upon Trevor's head.

The exact second Coach's hat was placed onto Trevor-- BWOMPH!

Trevor gasped as soon as he felt a massive heaviness on his chest. Fearing some sort of medical emergency, the young jock was horrified when he looked down and saw that instead of his chiseled pecs and abs, he stared down at large muscletits and a big gut.

The rest of the jocks cheered as they watched the new Coach explore his inflated body with shaky hands. Where a fit, young jock had stood just moments before was now a beefy bear of a stud. He still had muscles, but now they were concealed by a thick layer of fat. His pecs that were capped with nubby nipples still protruded off of his chest, but they also drooped slightly and rested atop his cresting musclegut that hid away his lengthened, hardening cock. As Trevor explored his new body, he saw that he was covered in manly hair, and he looked over a beefy shoulder to stare in the mirror on the wall, paling when he saw an older man staring back at him. He had a goatee and slight wrinkles near his eyes, complimenting his new daddy look.

He looked just like Coach: a big, burly musclebear.

"Wh-what happened to me?" the former jock panicked, bristling at his much deeper voice.

He turned back to ask Coach what had happened to him, only to jerk back in shock as a trim, young jock with a chiseled six pack stood in his place instead.

The toned jock playfully pinched Trevor's new belly, making the new daddy blush. "I'll miss that," he teased. "But now it's your turn to be Coach. We alternate from year to year, so enjoy it while it lasts."

The rest of the frat bros cheered as Trevor struggled to take the cursed hat off, but it was seemingly superglued to his head, leaving him trapped as a muscle daddy coach for the rest of the year.

-- -- --

Over the next couple of weeks, Trevor managed to adapt to his new role as Coach. At first, it was a struggle trying to squeeze his new furry bulk into clothes since he'd gained at least sixty pounds of muscle and fat. And he was finding that his new daddy body was CONSTANTLY horny.

Never before had Trevor ever had a gay thought in his life, but he was finding it incredibly hard to not drool over all of his jock frat brothers. Their toned muscles and youthful bodies made his enlarged cock surge, throbbing with want. His hairy bulk was also sensitive, and he could get himself off just by worshipping his hairy muscles; and his enlarged nubby nipples were hardwired straight to his cock.

However, Trevor was surprisingly happy to find out that his new body also offered him something else.

"Hey, Jockbro, get me another beer!" Trevor bellowed in his deep voice from his spot on the sofa. He was wearing a simple jockstrap that was stretched to bursting as it struggled to contain his massive cock. He opted to go shirtless, shuddering a little as the air from the A/C blew over his hard nipples.

One of his frat brothers immediately scampered towards the fridge, not even bothering to hide the fact that getting ordered around by the musclebear made his rock hard. He grabbed a beer off the bottom shelf and hurried back to the living room, his hard cock tenting out his gym shorts.

No matter what order he gave, the new Coach was delighted to discover that the jocks in the frat had to obey. Even better, was that it turned them on to be bossed around by such a manly daddy such as himself.

"Here ya go, Daddy," the jock gushed as he handed the new Coach his beer, his cock throbbing and leaking precum into his shorts.

Trevor took it and chugged it, letting out a loud belch. He then gestured down at his large bulge, his own cock starting to slip out of the small confines of his jockstrap. "Go ahead and take care of that," he ordered.

The frat bro dropped to his knees and immediately fished Trevor's daddy cock out of his jockstrap, eagerly slurping it up. He moaned loudly as he sucked the new Coach off.

Coach Trevor moaned loudly, his deep voice echoing off the walls of the frat house. He loved his new position as Coach, and he knew deep down that this was going to be the best year at college ever.

#muscle #musclegrowth #pecs #straight-to-gay #Daddy #Daddification #Belly #Gut #gut growth #Hairy #Hairy Chest #Asks #Requests #gym_runt #straight to gay

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oversizedmen · 2 days

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Wow is bigger than my head.. I need to take a photo

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aimuscle · 3 days

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Denmark, known for his cookies and his viking giants.

#culturismo #ai art #bodybuilder #bodybuilding #muscle art #ai generated #culturista #muscles #musclegrowth #macrophilia #muscle viking #muscle giants #copenhagen

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cowboymuscle · 2 months

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#casey wild #wild_ifbbpro #men #model #muscle #musclegrowth #muscle worship #fitness #insta #bodybuilder #bodybuilding #fit #gay #handsome #nerd #gym #pecs #biceps

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dumbass420bro · 11 days

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Nothing better than a pair of big juicy himbo tits, i’m telling you bro, you need to get a pair too.

-personal benji post-

with this bulk and pump, i keep giggling at how big my tits are getting. so fucking juicy bros. i luvvvvvvvvvvv himbo boobs, send me some pics of yours ;)

#himbo transformation #himbofication #muscle tf #dumber #dumber tf #jock tf #jockification #himbo #musclegrowth #jock #muscle transformation #jock transformation #muscle #pecs #himbo tf

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transformationloversblog · 2 months

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Ever since he started growing he got obsessed with it. He literally transformed from a cute boy to a muscle freak.

#muscle transformation #musclegrowth #roided muscle #roids #roidspiration #body transformation #bodybuilder #muscle #roided monster

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mrwavellswaps · 4 months

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Step-Bro Switch Up! (Re-Upload)

Instead of a new story this week I’ve decided to re-upload an old favourite instead. As some of you may or may not know, the original version was completely wiped from the surface of the internet by Tumblr to the point where there wasn’t even a trace of its existence. I wasn’t even notified of this when it happened which feels like it’s own separate issue considering it was my biggest ever story but I digress. I thought that now might be the appropriate time to re-unleash this story upon the world and allow those who loved the original to enjoy it once again and for those who never got a chance to read the original to discover it for the first time. That said I’m hoping to come out with some new and fresh content very soon but in the meantime I hope you all enjoy this return of an old classic!

~~~~~~~~~~~~~~~~~~~~

I found myself waking up at 6:30am in the morning which was rather unusual for me but not so much for my body. I soon realised why though as a low rumble came from my stomach. With a sigh I slid out of bed, trying not to wake the other sleeping jock beside me in the process. I didn’t even bother putting on underwear, instead walking to the kitchen buck naked.

I waltzed up to the fridge, opening it up before pulling out a carton of juice. After taking a few huge gulps I lick my lips and let out a deep belch. Next thing I’m rummaging through to see what I can make for breakfast. Had to make sure I kept this big body fed after all. Can’t let all my step-brother’s hard work go to waste. Confused? Well let me start at the beginning…

———

A few years back not long after I turned 20 my mom met a guy named Devin who she soon started dating. Pretty big guy with a bearish ex-jock physique. He was 45 at the time so a similar age to my mom and they seemed to get along great. I certainly didn’t mind having some extra dilf eye candy around the house every now and then. I soon learned however that Devin was also a single Dad with a 22 year old son which certainly peaked my interest.

When I first met him I almost couldn’t believe my eyes. He introduced himself as Sam but I was almost too hypnotised by his looks to notice. He was the perfect image of a star college jock with enormous well rounded muscles that bulged under his clothes while standing at an imposing 6’3, practically dwarfing my lean 5’8 frame. And of course he was devilishly handsome too because the hot body wasn’t already enough, even having a great full beard that I was jealous of. I even remember how I had to hide my pulsing boner after he pulled me in for a quick bro hug, his manly scent getting caught in my nostrils.

After that Sam became a frequent part of my jerk off fantasies. Could you blame me? Not only was he the epitome of masculinity but my god did he have an incredible ass. Whenever Sam had his back turned I couldn’t help but have my eyes glued to those massive globes, no doubt stretching whatever pants he was wearing. Honestly I felt truly blessed to be able to spend time around such a man.

Anyway fast forward about two years and my mom had already gotten married to Devin. It was an amazing ceremony but for half of it all I could think about was how me and Sam were now Step-Brothers. We were truly intertwined now. I didn’t think the idea of that would turn me on as much as it did. That fucking hunk, my brother.

Shortly after the wedding however, the roommate Sam had been sharing an apartment with decided to move out and live with his new partner. At first Sam had been considering downsizing to a smaller apartment but when he brought this up I knew this was my chance. I pounced on the opportunity and told him I’d been thinking of moving out for awhile and that it’d be cool to spend some more time with my new brother if he was down for that. To my excitement he actually accepted and the next thing I know I’m moving my stuff out of my moms house and into Sam’s apartment. I was surprised at how clean it all was for the most part. Then again Sam wasn’t your typical dumb jock either, he always seemed very mature and put together.

The two of us got on pretty well living together. We tried to respect each other’s space and chatted a lot as good friends. Luckily I did well to hide my excitement whenever I saw him walking around shirtless, showing off his huge hairy chest, or god forbid only a pair of tight boxer briefs. The day I first saw that was the day I nearly creamed myself on the spot. Oh and while I respected his space when he was around, whenever I was home alone I couldn’t help but give into the devil on my shoulder before rummaging through his room. I tried not to take anything but every time without fail I’d sift through his dirty laundry, pulling out whatever sweaty clothes I could find and relishing in the smell.

For about 6 months that’s how my life was. Living under the same roof as my hot step-bro while trying not to let him see my dirty secret. That is until I found a certain little spell online. Pretty much I’d been searching up some fetishy body swapping stuff online and ended up stumbling across some weird body swapping ritual. Of course I didn’t believe it but the masses of comments on the page claiming it to have worked peaked my interest.

Next thing I know I’m up in the middle of the night waiting until I was certain that Sam was asleep before sneaking into his room. It didn’t take long for me to find the pair of yellow underwear he’d had on that day, giving it a quick sniff before stuffing it in my pocket and retreating back to my room. Once there I was able to start the ritual. I placed the underwear in the middle of a circle I’d drawn on the floor surrounded by candles before chanting some magical phrases that were supposed to enchant them. I can’t tell you how stupid I felt at that moment but I continued on anyway, finishing everything I needed to say before grabbing the underwear again. At that point all I had to do was wear it.

I yanked on Sam’s ‘enchanted’ yellow briefs with the hope that my wish would come true but as I’d expected, nothing happened. With a sigh I cleaned up the mess I’d made with this ritual stuff, feeling like an idiot as I did before heading to bed. I decided to keep Sam’s oversized briefs on though because just wearing them was making me hard even if I was still myself. I remember I’d begun to jack off in them, imagining how hot it’d be to see him wearing them after I’d stained them with my cum. That is until a wave of tiredness swelled across my body and before I knew it I was fast asleep.

It seems I must’ve underestimated that ritual because overnight something truly magical took place. When I awoke I already knew something was off when I noticed my feet hanging off the edge of my bed. I sat up in confusion only to feel much heavier than normal while looking down the bed to see a pair of much larger feet. Next thing I yank off my bed sheets only to find a massive, hairy, muscular body that certainly wasn’t my own.

Right away I was running my hands along the ridges of my abs before grasping the heft of my giant new pecs, loving all the fur as I was previously rather hairless. Jumping out of bed I was quick to discover that my lower body was just as hairy and impressive with huge quads, and impressive calves. And then it started to hit me. I didn’t realise it at first as I’d never seen it from this angle but these giant legs, these bulging arms, these bulbous pecs… they all seemed exactly like Sam’s! I was even still wearing his briefs which now clung tightly to my form as I didn’t fail to notice the familiar bulge in the front. Only… it was my bulge!

At that moment I knew what must’ve happened but my rational mind pleaded that it was impossible. Still I burst out of my room and made a beeline for the bathroom and what I saw in the mirror made me want to cheer, shout and most of all cream my new underwear. I saw none other than the sexy bearded face of my step-brother staring back in disbelief.

As you can imagine I spent the next 20 or so minutes inspecting every inch of my new muscle bound body. I did all sorts of poses to show off my physique in every way, pulled different kinds of weird faces in the mirror, relished in rubbing my hands through the full beard I was never able to grow before. Having the body I’d been lusting over for these past years at my disposal felt like some kind of lucid wet dream. But it was real! From my brother’s handsome face, to his giant muscle ass, to even his fat cock! All mine!

Soon enough I’d yanked off the underwear and started pumping my dick in ecstasy, loving how my hand only just fit the whole way around. Waves of pleasure cascading across my new body as I used my free hand to grope at my hairy pecs, the deep groans I let out only making me hornier. Before I could shoot my new seed however, I heard a scream come from what I can only guess was Sam’s room. Up until now I hadn’t even thought about the real him but judging by that scream I had only one guess as to what’d happened.

Instead of slipping the boxer briefs back on I decided to grab a towel instead and wrap it around my waist. I didn’t want him to think something was up to see me already wearing his clothes after all. With that I turned to the mirror one last time, scanning my face and upper body again with wonder. I still couldn’t get over it.

Upon entering Sam’s room I was somewhat surprised to see an exact copy of myself stood freaking out at his body. I should’ve been expecting it but it was still extremely weird nonetheless. Then, as he saw me stood in the doorway, he went silent. Naturally he was in shock for a good moment or two but as soon as it passed he began shouting a bunch obscenities at me. Demanding who the fuck I was and how I looked like him. He even tried to punch me which I’ll be honest wasn’t all that scary considering I was now twice his size.

Right then I knew I had a few ways I could go about this. I could admit that I caused this to happen, I could tell him that I had no clue how any of it happened, or even pretend to be completely oblivious and act as if I was really Sam. The horny devil on my shoulder told me to rub it in his face that I now had his irresistible jock body and that he was stuck with my unathletic one but I couldn’t. Sure we weren’t super close or anything but he was always friendly towards me and was never a dickhead so I decided to take it easy on him.

I pretended to be just as confused as he was, saying who I really was but not having any idea how this happened. I think I was pretty convincing. We ended up sitting in his room and discussing it for what felt like hours, going over everything that happened last night as Sam tried to comprehend the situation. Of course he only went on and on about finding a way to fix this and I had to pretend as if I cared, trying not to get distracted by my own body. In fact there were multiple points where I had to keep hiding the tent starting to grow under my towel because of how hot it was to look down and see a shelf of muscle sitting on my chest.

Eventually I was able to convince him that we weren’t going to figure this out any time soon so we had to start thinking about how we were going to live each overs lives. As you can imagine he wasn’t all that fond of this idea, protesting it at first but eventually came to see reason. I suggested we should start discussing all the important details we’d need to know but before that I wanted to get some actual clothes on. I had to try not to grin while telling him to get out of my room while I changed. Though I couldn’t help dropping the towel just before he left and showing off the meaty cock and impressive ass he used to have. I caught him glancing back with a look of envy, the very same look I used to give.

Of course getting dressed in Sam’s clothes was an erotic experience in itself. All of these large shirts, pants, briefs and socks that would’ve swamped my former body now fitting me perfectly. I must’ve spent at least 15 minutes or so just trying on different clothes while jerking my cock a little in between until I heard a knock at the door and my former voice asking what the hell was taking so long. With a sigh I tucked my new toy away and waltzed out in what I was currently wearing. A pair of well fitting black shorts and a large pair of black and white socks. I didn’t bother grabbing a shirt since I just couldn’t help but show off this bod. Could you blame me?

When he asked what I’d been doing I simply said I was trying on clothes. He knew there was more to it than that but decided he didn’t really wanna know. Instead we opted to both take a seat in the living room and start discussing things. I told him everything he needed to know about my retail job, which wasn’t a whole lot to be honest, as well as my friend group and what my daily routine was like. Afterwards Sam begrudgingly did the same for me, telling me all about his part time job as a fitness instructor at the local gym and that if we were stuck like this then I’m gonna need to learn how all gym equipment works and fast. He also gave me some inside info on his own friend group as well as walking me through what his football practice is like with the team. Part of me was worried hearing all this as I was beginning to wonder if I could really pull off being Sam but at the same time I was excited beyond belief to get into these social situations and convince people of the new me.

Thankfully it was Sunday so neither of us had a whole lot going on that day which gave us plenty of time to think and adjust without stressing. I spent most of it half naked and I loved catching glimpses of Sam glancing at his former body as I showed it off, even getting a little cocky by flexing every now and then which he didn’t appreciate all that much. Honestly I was surprised at how hungry I was as well and just how much I was able to eat. I mean I guess it made sense since a body this big needs a lot of fuel. Sam helped me a little with my meals though, making sure there was a bunch of protein and healthy calories to make sure I was feeding his body correctly. Later that day he also got me to head out for some cardio which I wasn’t too thrilled about at first but I actually kinda enjoyed it once I got running. I especially enjoyed my new sweaty scent that produced during it, not being able to help sniffing my pits when I got back. Of course Sam told me to go get a shower but before I did I couldn’t help swiftly grabbing him and shoving his face into my musky pits, laughing as he squirmed for a moment before letting him go. I apologised after through my laughter though I couldn’t help but smirk subtly as despite his face looking disgusted, the slight bulge in his pants told another story.

The next day however was when the real challenge started. After breakfast Sam gave me a list of what exercises to do at the gym. I’ll be honest I didn’t know half of them and had to look them up on the way. That walk to the gym however was the first time I noticed the difference in my interactions. Before people wouldn’t pay much mind to me but now as I passed people on the street I’d get some smiling and glancing at me, some giving me an envious once over, others even saying hi to me in a bit of a flirty way. Mostly from girls which even though I was gay I still enjoyed the flattery. Once I was at the gym though, I was in the zone. It’s weird but it was like muscle memory took over. I performed each and every exercise perfectly while loving the pump I was getting. Once again I was having to hide my boner at many points since I couldn’t help but get off to how fucking strong I was now. It did and still does feel absolutely incredible!

Later that day I headed to Sam’s usual football practice with a bunch of his jock friends. Initially I was worried I wouldn’t fit in but I somehow found myself easily slotting into the jockbro mindset and was soon laughing and joking with the boys. It was the same when we started playing, right away it was like my body just moved on its own, knowing exactly what to do and how to play. It was then that I realised I must’ve somehow absorbed a lot of Sam’s skill, know-how and personality when I took his form and I was gradually unlocking it all by putting myself in these situations. Although I don’t think I was playing as well as Sam usually does, not because of a lack of skill but because I was constantly distracted watching all those jock butt’s and bulges squeezed into those football uniforms. Surely at least one of them had to be gay right?

After getting home I found Sam sat on his laptop looking up all sorts of body swapping theory stuff. Of course most of it was fake but he was clearly desperate to get his body back. Sure there might be an off chance he could find the site I used but that a one way transfer according to the spell. Knowing this I told him to not get his hopes up and to just try and make use of the hands we’ve been dealt. As you can imagine he didn’t take that very well at the time.

From then onwards though, I’d say things were pretty easy. I easily convinced my new dad and former mom, now step-mom that I was their good ol hairy jock of a son. I was able to pull off being a fitness instructor with relative ease after going around the gym and using each piece of the equipment to trigger the memories of how to use it properly. I’d convinced all of Sam’s friends inside and outside of the football team that I was him. I’ll say that it took me awhile to fully get used to hearing my new name but whenever I did it was like music to my ears.

I’ve gotta say though, living with the former Sam was more fun than I thought it’d be. I figured it would’ve been weird initially after the switch and that we’d have to go our separate ways but even after just over a week of being Sam I was having so much fun messing with him. For example I almost never wore a shirt around the house, always showing of my huge hairy pecs and whenever I’d catching him staring I’d give a little pec bounce until he looked away in annoyance. I’d frequently pull him in for ‘brohugs’ where I’d either squish him against my chest or trap him under one of my pits until I saw him getting a semi. He’d alway deny having one though which is why I decided to set up a fun little experiment.

Turns out that Ian, one of the other jocks on the football team, was in-fact gay. Wasn’t hard to decipher after noticing his frequent glances at my ass in locker room, not that I can blame him, and how much he blushed when I gave his jock butt a slap after practice. Next thing you know we’re making out under the locker room showers while groping up each overs bodies. It was insane since before I would’ve considered Ian to be light years out of my league but now I had him on his knees with his lips wrapped around my shaft to which I then soon returned the favour. It was here that I got my experiment idea.

Yesterday after practice, I pulled Ian aside and asked him to come back to my place. He was quick to agree and before you know it we were stumbling into mine and Sam’s shared apartment. My former body jumped up off the couch and asked what Ian was doing here. ‘To have some fun’ I believe my response was being making out with Ian in front of him and dragging the other jock back towards Sam’s-well my bedroom. As Ian and I stumbled onto the bed, kissing along each overs bodies as we slowly undressed, I made sure to leave the door open just a crack.

One thing lead to another and before long Ian had his face buried into a pillow as I buried my cock in his ass and I made no attempt to be subtle about, groaning and grunting and my balls smacked against that supple butt. Throughout our amazing fuck session I made sure to keep glancing back at the door and finally I caught exactly what I was waiting for. I saw none other than Sam peeking through the crack in the door and lightly tugging at my former dick. That was all the confirmation I needed that my little bro was just as much of a homo as I was no matter how much he wanted to deny it.

———

And that more or less brings us up to the present, waking up early in the morning with Ian fast asleep beside me and being called into the kitchen by my growling stomach. As I searched through the fridge to see what else I could find to satisfy my hunger, I heard a cough coming from behind. Whipping my head around I saw none other than Sam with a judgmental look on his face.

“Don’t gimme that look, you’ve seen all this before.” I say, shaking my hairy ass a little before flexing. Sam rolled his eyes. “No no no don’t act like you don’t love seeing me show off your body, I saw you peeking in on me and Ian last night.”

Sam’s face went bright red. “W-w-what? N-no I didn’t!”

Immediately I shushed him, not wanting to wake Ian before stepping closer. “Oh come on don’t lie, I know you jacked off to it. So what was your favourite bit? The part when you got to see me using your body to pound into another buff dude and fill his ass with your cum? Or the part where you watched Ian totally dominate me afterwards and go to town on your former hairy bubble ass?” By this point Sam was completely speechless knowing that he’d been caught.

With that I lifted up an arm, exposing one of my pits to him but this time I didn’t shove him in it. “Go on, you know you want to. You can try and hide it all you want but you love seeing me show off your body, you love watching me adopt all your little habits, you love watching me slip perfectly into you jocky lifestyle. Just embrace it lil’ bro” He stares at me then at my pit. I could see it in his eyes. Pure lust. And then just as I’d hoped, he gave in to it. I couldn’t help but grin ear to ear as he voluntarily presses his nose into my pit, huffing my musk like a drug. I was even more surprised when he pulled away and immediately dropped to his knees, drooling at the sight of his former cock.

“C…can I suck it?” He asked while grasping it gently in his hand.

“Only if you agree to only address me as Sam from now on, even when we’re alone.” I state looking down at his hungry eyes. He nods in compliance and with that I put a hand on the back of his head and press him down onto my dick, letting him slobber all over it. “But don’t get too used to this. I’m planning on making Ian my boyfriend in the future and I wanna be faithful ya know. So enjoy it while it lasts.”

With that everything has finally fallen into place. The old Sam has finally accepted our new roles, I’ve assumed my new identity perfectly and I might even have a hot new boyfriend soon. My life couldn’t be anymore perfect right now…

#male body theft #male body swap #stepbro #step brothers #brothers #identity theft #male transformation #age progression #straight to gay #musclegrowth #muscle theft #male muscle growth #hairy #jock #magic #permanent

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buildamusclebear · 5 months

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It's what I want to be. The monster of someone who is dedicated to making me grow. May the only limit of my muscles be their desire to make me grow.

#musclegrowth #nevertoobig #muscle gainer #muscle freak #roid pig #roided muscle #gay muscular

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virtualmuscles · 3 days

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Big Boy

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ultram0th · 2 days

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I am fond of you Derek turning into a more muscular and/or hairy guy if that's the kind of request you were looking for? Love your stuff though regardless it's hot and well done.

It all began the morning after Derek had assumed his new Alpha title. Stiles had slept over, cuddling up next to his boyfriend when he'd jolted up awake as soon as his hands had brushed up against something unfamiliar.

"What...?" he trailed off, his eyes wide at his boyfriend's chest that he usually used as a pillow.

"Hm?" Derek sleepily yawned, wondering what his smaller boyfriend was panicking about.

"Der," Stiles mused, "your chest. It's... really hairy."

The werewolf cocked his eyebrow up at his boyfriend, running a hand over his pecs. Sure enough, the werewolf's previously smooth chest was now covered with black hairs. They spread out over his pecs, running down across his stomach before connecting to his bush. The hairs curled and looked thick enough to where one might've guessed that Derek had always been rather hirsute. His pert nipples poked through the dusting of hairs, looking hard. Plus, Stiles hadn't noticed it initially, but Derek's square jaw was also covered by a thick beard that looked like it'd take weeks for a guy to grow... not just a few hours.

Derek's eyebrows knitted together as he ran his hands over his hairy chest, his heart starting to race. However, just as soon as the worry began to trickle in, it disappeared.

His face smoothed out and he yawned loudly, gently placing a hand on Stiles's head to pat it back down to his now hairy chest.

Stiles wanted to argue, confused over both his boyfriend's sudden change and different attitude. He knew that Derek should've been freaking out and wondering what was happening to him, but instead his boyfriend acted like everything was normal.

He tried to ignore it, but as Stiles rested his head back down onto Derek's chest, something about the way he had to crane his neck alerted the human to something else.

"Derek!" he gasped loudly, sitting back up and tearing the covers away from his boyfriend. "You're... bigger!"

His boyfriend had always had a pretty toned physique, but now it looked as if Derek's chiseled pecs were now significantly larger and much more plump than they should've been. Without the covers over him, Stiles could also see that it wasn't just Derek's chest that had grown larger. His boyfriend's arms seemed to have doubled in size, looking thick and powerful as he lied on the bed. Even his legs were larger, his quads pressing tightly together and shoving his bulge (which seemed to stretch out his underwear more than usual) out in front.

And of course, every single larger muscle was covered in dark, manly hair.

"Stiles," Derek groaned, going so far as to roll his eyes, "everything is fine. I feel fine, there's nothing to worry about--"

He was interrupted when his phone alarm beeped, letting him know that he had to get out of bed, making him frown.

With a groan, Derek rolled his hairy bulk out of bed, the frame squeaking much more than it usually did as he moved. His heavy footsteps thudded over towards the dresser. As he walked, Derek noted how odd it felt to have his thighs rolling over one another, and how awkward it was to have his muscular arms resting at a ninety degree angle atop his flaring lats.

Stiles watched in disbelief as Derek nonchalantly attempted to get dressed in his normal clothes.

"Damn," Derek growled as he examined himself in the mirror. With his new bulk, none of his clothes fit him anymore. He couldn't get any of his jeans up past his massive quads, having to throw on a large pair of sweats that used to be baggy on him. Now, the material was skintight, showing off his meaty glutes and enormous package in front. The t-shirt he'd grabbed barely wrapped around his torso, ending above his navel. It had torn significantly across his large muscletits, showing off the hairy cleavage that he now possessed. There were two large bumps on the front from where his larger, nubby nipples poked against the thin cotton.

Stiles watched as Derek paled in the mirror, his beard-framed mouth opening like he was about to voice his concerns, but again, Derek seemed to instantly relax. He shrugged his broadened shoulders.

"I think my clothes shrunk in the wash," he chuckled, gesturing down at his hairy muscles.

"Derek!" Stiles cried, throwing his hands up in the air. "It's not the wash, it's you! You've turned into a hairy bodybuilder!" As crazy (or crazier) as it seemed, Stiles could've sworn that he'd watched Derek's hairy pecs balloon out a few more inches in those few seconds.

Derek took one last look at himself in the mirror, seeing how large and imposing he looked with his incredibly large, round muscles and the thick, masculine hair that coated them. He couldn't help but smirk back at his shocked boyfriend, flexing a large, hairy bicep. As his massive muscle bulged to the size of a bowling ball, the tight sleeves of the t-shirt burst apart.

"I'm not a bodybuilder," Derek smiled at his boyfriend, giving him a playful wink. "I'm the Alpha."

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