Joey, a young, six foot tall, 200 pound man, walked into the locker room. He'd seen Guy come in to the gym earlier, and was wondering what had happened to the handsome lug. Guy had been looking particularly beefy, in fact.
Joey walked through the locker room, hearing muttering from off to the side. He looked around, and on a whim, decided to walk over to the area with the scale. As he approached, he saw the most massive man imaginable stepping off of it, muttering something about "four hundred pounds." Joey's eyes went wide, and his cock stirred at the sight of the huge hunk. Then the man looked up, and Joey nearly fell over. It was Guy!
"G- G- Guy?" Joey managed to croak, leaning against the wall for support.
Guy looked at Joey in surprise, but a grin came quickly to his face. "In the flesh man. All four hundred pounds of me!" Guy raised up his huge arms, and flexed them proudly. Joey gaped at the sight of them, the monstrous biceps pushing up and up, tearing through the already tight fabric of the shirt, round balls of pure power, thick veins across the hard muscle.
Joey's cock went mad in his gym shorts, tenting dramatically. Guy raised an eyebrow, but his grin remained. He lowered his arms slowly, and brought his fists to his hips. He rolled his giant shoulders forward, causing his lats to flare out and his pecs to bunch up. The sound of tearing cloth filled the room, as his lats pushed out and out and out, shredding the sides of the shirt. Joey gasped, a wet spot forming at his tented crotch.
Slowly, Guy flexed his legs as well, his huge quads pushing out, the definition between the thick heads of muscle increasing. His shorts shredding right up the seam along each side, to just below the waistband. Guy's cock began to bulge as well.
"I guess you like what you see, huh Joey?" Guy purred, his voice low and sultry. He brought his hands behind his head, making his lats spread out and up, his huge arms bigger than his head, monstrously powerful.
Joey nodded slowly, unable to speak properly. Guy's grin widened, and he grabbed the collar of his shirt, which was being stretched by his thick neck. His forearms flared with power as he gripped it, and then he pulled, tearing it away, his huge torso slowly revealed at last, each muscle utterly massive. Joey let out a loud gasp, his dick exploding in his shorts, the stain across his crotch expanding as it filled with warm cum.
Guy responded with a groan of his own, his dick rising dramatically. So turned on be seeing Joey cum - just from watching Guy flex! Guy slowly pulled down his wrecked gym shorts and kicked them aside. His strained underwear followed, and he stood before Joey, totally nude, 400 pounds of pure power. His cock, always big, stood at attention, pre leaking from it. Guy ran a thick thumb along its length, giving Joey a coy look.
Joey lurched forward, unable to bear any more. He landed on his knees in front of Guy, hands groping those monstrous thighs, as his tongue lavished praise on Guy's big cock. "Fuck you're hot..." Joey moaned, "You've always been hot, but now... so big... so fuckin' big!"
Guy groaned, enjoying the feeling of Joey's tongue on his dick. He pressed his big hips forward, pushing his big cockhead into Joey's mouth. The smaller gymrat grunted in surprise as the big head went in, but quickly got down to business, sucking in more and more, eagerly devouring Guy's big tool. The hulking muscleman started to pump his dick in, more forcefully now, groaning and shaking, his big balls swelling with cum. "Oh yeah..." Guy groaned, "feels so fuckin' incredible, bein' this big, this powerful!" His cock ached for release, throbbing angrily in Joey's mouth. Guy grabbed the smaller man's head, thrusting his huge tool in violently. Joey took it all, loving the power in Guy's body, sucking furiously.
With a roar of lust and power, Guy came suddenly, his big dick expanding and then shooting a huge load down Joey's hungry throat. The smaller man sucked it all down happily, guzzling Guy's rich manseed. After the big man was finally done, he pulled out, and slowly lifted Joey up from the ground. "Thanks buddy. I needed that. Bad..." he rumbled in his low voice.
Joey just grinned back. "Any time, big man!"