#muscle compression

It was Derek and Stiles’s first Christmas together. Even an emotionally stunted werewolf like Derek knew what that meant: He’d have to get his boyfriend a gift. That also meant that he’d have to brave the stores during the holiday season, which also meant that he’d be surrounded by people. A lot of people.

Derek had his perpetual scowl etched onto his gruff face as he stomped angrily through the mall, holding back growls when other patrons would accidentally bump into him.

With the massive influx of people combined with the annoying Christmas music blaring over the speakers, Derek was in a pretty bad mood to say the least. He snarled as he stomped his way through the busy mall, unsure of what to buy Stiles. He just knew that it had to be something that his boyfriend would enjoy and want to use over and over.

The grumpy werewolf was so caught up in the overstimulation and irritation that he hadn’t noticed the mall Santa Claus until he bumped into the man.

The mall Santa stumbled back, but seemed to be in good spirits as he laughed the interaction off. “In a hurry, Sir?” he asked in his trademark jolly voice.

Derek looked the large man in red up and down, his frown still superglued to his face. He just grunted out a response and gave a curt nod.

“Would a candy cane cheer you up?” Santa Claus asked, holding out the red and white sweet to the werewolf.

Derek scowled at the candy cane, notoriously hating sweets.

“It might help you out with some Christmas cheer,” the mall Santa coaxed. “Or maybe you need a little more help with getting into the holiday spirit?” The older man snapped his gloved fingers mischievously.

As he rolled his eyes, Derek felt an odd tingling sensation break out over his skin. The scent of peppermint hit his nostrils and became overwhelming, making the werewolf begin to sway a little on his feet. The hairs on the back of his neck stood up, a sign that the man before him was more than just some mall Santa Claus.

Derek tried to steel his nerves and he squared his broad shoulders. “Who are you…” Derek’s question trailed off when he heard an almost helium-like quality to his voice, as if it had shot up by several octaves. 

The tough werewolf’s face turned bright red at the sound of his altered voice, but he cleared his throat before trying again.

“What the hell did you do?” he squeaked in his higher voice, even pointing an accusing finger at the man in red. However, that alerted to Derek to another terrible occurrence.

The werewolf could feel his heart starting to race in his muscled chest when he saw that the sleeve of his leather jacket completely covered his pointing hand, something that should’ve been impossible due to the alpha’s impressive height. Even during his panic, Derek managed to noticed that instead of looking the other man eye to eye like he had before, he was staring directly at the man’s bearded chin.

Derek began to shove his way through the crowd so that he could get to a secluded area, away from prying eyes. As he bolted, the werewolf was humiliated to realize that he was quickly becoming one of the shortest people in the mall. That, and for another strange reason, the more Derek shrank, the tighter his clothes actually became as opposed to looser. Even his gait was starting to change and Derek could feel his thighs starting to rub against each other in a way they never had before.

Derek burst into the bathroom and sprinted towards the mirror, gasping loudly at what he saw. 

The first thing that the alpha werewolf’s eyes honed on were his ears, which were now pointed at the top and slightly elongated to resemble elf ears. But then Derek’s attention was to brought to the rest of his shrinking body.

“What the fuck is going on?!” Derek panicked in his high-pitched voice as he saw that he was way shorter than he should have been. The bathroom sink came up to him mid-chest, and his leather jacket fell off of him and landed onto the floor, alerting Derek to even more. The werewolf gasped again as he realized that he wasn’t shrinking proportionally. Instead, it was more like he was squished down, losing his height but none of his mass.

Derek held his arms out in front of himself, watching as they pulled inwards. All of his muscle was left to bunch up within the shortened limbs, leaving them all thick and bulky, more akin to an oversized bodybuilder’s arms. His biceps ballooned out to the size of bowling balls, being so large and thick that Derek was forced to keep his arms out at his sides with them stuck at a ninety degree angle. The same thing happened with his legs— as they shortened, all the muscle in there got all bunched up and thick, forcing Derek to stand with them flared out as this wide thighs kept pressing against one another. His shoulders broadened to an obscene degree, ripping the werewolf’s shirt to shreds. As his torso squished down, his pecs bulged out further in front of him, forming a large shelf that he couldn’t see over. A part of Derek was relieved that his cock didn’t undergo the same transformation, but with it remaining its previous size on his compact body, it dangled to his knees.

Derek was floored, silent as he studied his new form in the mirror. He looked as tall as he was wide, having lost about half of his height but none of his muscles. He looked like a really short bodybuilder, and all of the compressed muscles made it extremely difficult for the werewolf to move.

He blushed when he tried to take a step forward, his thighs rolling over one another’s exaggerated girth, forcing his walk to resemble more of a waddle. His long cock dangled wildly between his legs as he moved. His arms were stuck out at his sides, and his pecs protruded far out in front of him, preventing him from seeing the ground.

Derek looked like an over-muscled elf!

“Well, that’s a good look for you, Derek,” the mall Santa Claus mused he entered bathroom. “Sorry about all of that bulky muscle, I can never get the shrinking spell just right.”

“What the fuck did you do?!” Derek tried to roar, but his squeaky voice ruined all of his toughness. He tried to hold his hands out at his sides, but his bulky muscle made it difficult to maneuver.

Santa Claus gave one of his classic, bellowing laughs. “Isn’t it obvious, Derek?” he teased. “You were looking like you were lacking some of that Christmas cheer, so I thought that you could use some help.” He then held out a handful of candy canes. “Why don’t you help me pass some of these out to the other shoppers? Then I’ll consider changing you back.”

The mall Santa Claus snapped his fingers again, and a pair of bright green shorts formed on Derek’s squished body. They were skintight and they left his noticeable bulge out in front and center. His enormous looking chest was forced to remain bare, his ballooned pecs looking hilariously big and cumbersome.

Derek’s broadened shoulders rose and fell as he sighed, taking the candy canes from the mall Santa and waddling behind him, trying to get the hang of moving around with such bulky muscles hindering his steps.

For the rest of the day, Derek helped the mall Santa Claus pass out candy canes to the shoppers in the mall. Many of them would muse over how large his muscles looked on his shortened body, a lot of them even asking him to flex for them. Despite himself, Derek would find himself flexing his massive muscles as best as he could, his face bright red. “Merry Christmas,” he’d say at the end of his posing routine as he passed the customer a candy cane, his high-pitched voice usually eliciting a few chuckles.

Much to his surprise, Derek found himself starting to actually have fun with the whole ordeal as the day went on. He started to feel himself being filled with an odd sense of joy as he passed out the sweet treats to the other shoppers, and he even got a little giddy when he would flex his large muscles for them, leaving the shoppers with a wide smile.

“Merry Christmas!” Derek exclaimed in his squeaky voice as he handed a candy cane to another customer.

“Derek?” he heard Stiles’s voice ask, confused.

Derek blushed when he looked up and saw his boyfriend staring down at him with wide eyes. 

“Oh, um, hey Stiles,” Derek squeaked, his face growing bright red. “I’m, um, trying to get more into the Christmas cheer.” Out of instinct due to his work for the day, Derek lifted his barely flexible arms to pose for his surprised boyfriend.

Stiles’s eyes widened even more, and Derek could pick up on his arousal.

“You like… this?” Derek asked, surprised. He gestured down at his short, muscled frame. 

Much to the werewolf’s surprise, his boyfriend nodded. “You look… really hot!” he smiled. “It’s the best present you could’ve given me!”

Immediately, Derek felt his compressed body swell with pride and he hit another pose. “R-really?” he squeaked, feeling excited that he might have inadvertently gotten his boyfriend a good present. “Well, Merry Christmas, Stiles!” Derek formed a most muscular pose, his tiny body flexing with power and loving how turned on his boyfriend looked.