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Gym Bug


theredder

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Part 1

Toby had always been a pretty small kid but now that he was in college he wanted to change that. His university like so many others had a gym on campus for students to use but to Toby this didn't really seem like much of an option if he was going to be serious about changing himself. Instead, he'd found one of those old school gyms off campus, the kind that was set up in an old warehouse and catered almost exclusively to champion powerlifters and bodybuilders, where the walls were covered in pictures and medals from all the competitions its members had won. It was the kind of place where Toby was the only person there who weighed less than 200lbs of solid muscle but it was also the kind of place where he'd probably learn and grow the most if he kept with it.

Toby was determined, and after a few months, he started to see progress as he grew fitter and stronger. He could see and feel the shape of his body starting to change, a firmness where it hadn't been before. It helped that despite being some of the biggest guys Toby had ever seen, everyone seemed incredibly nice and helpful with tips and advise on how to improve. Many of them saying that they were just like him until they got bit by the gym bug and that it was only a matter of time before Toby got bit as well, all he had to do was keep training. Little did Toby know how serious they all were or that gym bugs were even a real thing and gyms like these were perfect nesting grounds for them.

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Part 2

One day when Toby was finishing up and grabbing his bag out of his locker, he suddenly felt a bite on his hand and dropped his bag only to see something scurry away into the shadows. "What the hell was that?!" Thankfully there didn't seem to be any blood or swelling where it had bit him, just little bite mark. It didn't seem to be much of anything so Toby headed back to his dorm without a second thought. Though on the walk back Toby's skin slowly starting tingling, starting at the bite mark and slowly spreading to his whole body. He started feeling hot and heavy like he was getting a fever and just wanted to crawl in bed and sleep.

Toby barely made it a few steps inside his dorm before the feeling grew much more intense and painful. Looking down he could see the muscles in his arms were twitching and rippling. Another wave of pain hitting him as his shirt grew tighter and tighter around his expanding muscles. The fibers of his shirt and pants starting strain, then pop, then give away entirely. Pain gave way to pleasure as he felt his body grow larger and larger, his pecs becoming thick square and heavy, his stomach once flat and soft now hard, ridged, and well muscled. When the feeling dissipated and stopped, Toby's head was spinning, the clothes he'd been wearing in shreds on the floor. "What the fuck had happened?"

But as Toby ran his hands over his new thicker pecs and the rest of his body, he had a guess. "The gym bug, its real!" Flexing his arm and checking out the thick mature muscle that comprised his bicep and triceps, it was everything he'd worked for. "This is freaking amazing! Look at my muscles, they are huge!" Toby reached over with his free hand and felt his own bicep, cupping it in his palm, one of the most filled out and solid peaked he'd probably ever seen and it felt incredible. Even  more to his surprise, as he felt himself up, he felt his fat hard cock twitch with pleasure, something he didn't expect to enjoy as much as he clearly did.

image.thumb.jpeg.a66f8322b65f11d2f9e22299a20974ba.jpeg

-Art credited to the late Salvador503

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Very nice story and the cartoon is great. Much as I am of the "wham bam slam" school of story-writing you might consider slowing this one down a little bit and adding more detail: how tall is Toby when he joins the gym? How much does he weigh? How much does he gain before the gym bug bites him? Afterwards?

For the future: Is he gay or straight or bi? How do his classmates, dorm mates, and potential romantic partners react to his newfound size? What about his fellow gym members? Speaking of: Who's the biggest, the oldest, the youngest, the strongest? 

Clearly, I am interested in seeing more more more! Thanks for a great start!

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Part 3

Toby was so enamored with himself that he didn't hear the jingle of keys outside his dorm room, the lock turning and the door swinging open before Toby could react. Back to the door, Toby glanced over his shoulder, bicep still flexed to see his roommate, a stunned gawking look on his face as the door closed behind him. Toby and Andy were friendly, but not exactly close and definitely not used to seeing each other naked, especially looking like this! Though despite this, Toby didn't really budge. Normally, they each did their best to be discrete and modest around each other, changing clothes quickly, and keeping covered with a towel after showers, but Toby didn't care. He didn't feel any shyness or embarrassment, just pride and confidence.

Turning to face Andy, Toby didn't bother to explain, instead flexing both his biceps proudly, he didn't want to hide, he wanted Andy to see everything. Andy hadn't moved or said anything and was just gawking, clearly astonished and maybe even a little curious. Toby had assumed Andy was straight, and maybe he was, but the awe struck look on his face told a different tale. Toby had always thought he was straight as well, but all he wanted now was to see what the look on Andy's face meant. "I haven't measured them yet, but you should come and give em a feel, they rock hard!"

Regardless of the fact that Toby was naked and fully erect, Andy gave a little nod, swallowed, and started stepping forward. Andy dropped his backpack and reach out with both his hands, cupping each over one of the peaks. Andy's hands felt small and soft against the large orbs of Toby's biceps and the feeling made Toby's cock twitch and ache with excitement. Biting his bottom lip trying to contain himself and despite his excitement, left Andy to explore at his own pace. "They're huge huh?" Toby said with a grin as he could see how much Andy was blushing, knowing that this was just the beginning.

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Part 4

Toby watched Andy grope and explore his arms with a curious excitement. Andy slipping his hands along the underside to feel Toby's equally huge triceps, eventually working his hands over Toby's delts and down his pecs. At that point Toby dropped his arms and started bouncing his pecs left to right. Toby had never bounced his pecs before, he'd never had pecs to bounce before today, but it came to him so effortlessly that it was like he had never been anything but jacked. Andy eagerly filled his hands with Toby's thick slab like pecs, squeezing and feeling the thick muscle as it flexed and popped.

It was too much for Toby, losing his composure, tilting his head back, he let out a pleasure filled groan. "Ohhh yeah!" It startled Andy some, giving him pause, and as Toby felt his hands pull away, he refocused himself on Andy. "Don't stop! Can't you see how hard you're making me?" With a grin, Toby reached for Andy's shirt, pulling it up and over his head before dumping it on the floor. Andy's frame was small and slim and only served to reinforce how huge Toby had become. Grabbing Andy by the waist Toby pulled him closer and leaned in to kiss him. Andy was surprised, but eagerly returned Toby's kiss, moaning in his throat as his hands returned to Toby's pecs.

As they got lost in each others arms, kissing and feeling each other up, Andy could feel Toby undoing the button and zipper on his jeans and slowly guiding them to his bed. As Andy's jeans fell to the floor, Toby palmed the front of Andy's underwear, feeling his rock hard prick. "Haha, fuck! You're rock hard too!" At the edge of Toby's bed he pulled Andy's underwear down, taking a moment to appreciate another difference between them. Andy's cock was indeed rock hard but was a fairly average 6inch shaft. Toby's on the other hand looked 8 or 9inches and was very girthy with balls to match. Pressed both their shafts together, Toby wrapped his hand around both and stroked. "Don't worry, I'll go easy on you."

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Part 5

Toby could feel Andy's desire, he could feel it in the way Andy whimpered and moaned, he could feel it in the way Andy kissed him, but most of all he could feel it in the way Andy touched his muscles. Toby loved the way Andy touched him, lustfully admiring his size and strength. It only made Toby want to be closer and more intimate with Andy, closer than touching and kissing, he wanted to be inside him, to fuck him. Toby grabbed Andy by the thighs and picked him up, chest to chest, Andy feeling utterly insignificant in Toby's strong arms. "Haha! It feels like you don't weigh anything at all!"

Leaning in Toby whispered "Now I'm going to fuck you." into Andy's ear like he was making a promise, or a threat. Pulling Andy's legs around his waist, Toby started to grind his fat cock against Andy's hole. By now Toby's cock was slick and slippery with all the precum leaking out of him, making it easy to eventually slip inside Andy's hole. It was clear Andy had never been fucked in the ass before, and as tight and apprehensive as his tight hole was, it was clear Andy was also hungry to be filled by his muscle stud of a roommate, squirming and moaning out loud the deeper Toby slid inside him.

Sitting back onto the edge of the bed, Toby used Andy like a sex toy, lifting him up and down on his shaft so all Andy had to do was take it. Andy moaned and moaned, muffled occasionally by their kissing or when he buried his face against Toby's neck. Toby didn't know what he enjoyed more, Andy's tight hole wrapped around his fat cock, or the way Andy groped and clawed at his muscled arms, back, and shoulders from how good it felt. Before long, Toby switched positions, planting Andy on his back, not leaving Andy for a second. "Look at how big I am!" Toby said as he started bucking his hips, fucking Andy with more power and force while he lifted both his arms and flexed his biceps. "After this, you're going to measure these peaks to see how big they are!"

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