"Will?" Peter knocked on the slightly closed door. He'd only come up to see why his son was making so much of a commotion. Sure, he knew his son was a bit of a sex crazed guy, but normally he didn't do it so often on vacation. At the very least, he'd wait until everyone was gone. Or attempt to be quiet as he masturbated to whatever he masturbated to.
"Oh man... Gotta cum. But can't... Fuck... Err... Grrr... Err..." Will let out a serious of grunts and groans as his thick hands ran up and down his even thicker muscles. The sensation just kept him in his daze. Each time he'd try to think of anything else, or get control over his mind, a twist of his nipple or finger would slide against a sensitive part. His dick throbbed at the sensation and body collapsed onto the bed he was sitting on.
"Will?" Peter asked again. He pushed the door open and could see his naked son masturbating like a mad man. His giant body and hands were aggressively rubbing at his dick. The average sized cock looked so small in his hands that could easily hold 60 pound weights.
For just a moment Will was brought out of his craze. "Dad?" he questioned. Then his dick throbbed again, shooting a wave of pleasure through his body. His wide back fell onto the bed underneath him, and he writhed in the sensation. Toes curled while his free hand gripped the bed underneath him. His hips pushed away from the bed and then fell back down.
"Will! What's wrong with you!" Peter shouted not sure what was going on. His son almost seemed possessed as he continued. Peter quickly ran over and tried to figure out what was happening. His hands touched his son's chest causing an even louder moan to come out of his body. Again, every muscle in Will's body tightened up and then released all at once. "Will!"
"Do it again..." Will panted. His eyes were glazed over and tongue hung out.
"What?" Peter took a step back looking at his son's lust filled eyes. He looked so needy. "I... I can't," he threw up his hands in defense and backed into the wall.
"Please man... You gotta... It felt so good..."
"I... I..." Peter looked down at the needy bodybuilder covering the bed. He'd slowed down ever so slightly, trying to get that hit that Peter's touch seemed to have given him. Even Peter could feel the sensation running through his body. He pawed at his cock running down his jeans, subconsciously. "What's going on?"
"I don't know man. But it feels fuckin rad. You gotta touch me again. I gotta feel your touch," Will reached toward Peter with his free hand. His other was still massaging his cock. Though for some reason it looked like it was having a bit more trouble getting a proper hold on it. But at the same time his body almost looked like it was getting bigger. The already oversized muscles looked to be more pumped. Rounder and fuller with power that bodybuilders dream of. He open and closed his hand, reaching out for the other man.
Peter took a step closer. He was still cautious but couldn't help but find himself intrigued. The longer he looked at the man on the bed, the more compelled he felt to touch him. With each step, he could feel his clothes started to slide off his body. The heavyset gut that he'd gained over the years seemed to be disappearing. It pulled closer and closer into his body and then vanished. His pants fell down to his ankles but he naturally stepped out of them. Even his shoes were too big and those were left behind with another step.
"What's going on?" Peter asked again. He could feel his desires starting to fill him up. His mind was only focused on the man in front of him. All the while his body was rapidly losing the excess weight he'd gained over the years. Instead of being the fat dad who fell asleep on the couch watching football on Sundays, he was a scrawny 20 something. Any fat or bulk he had was completely gone in place of a much thinner frame. His shirt slid to the side of one of his shoulders and the bottom covered his cock. Though not very well, as the rod stuck a good 8 inches in front of him. His eyes looked down at Will's, noticing that his was getting smaller and smaller. Obviously the difference in size was because of that.
"You need to fuck me..." Will moaned again. "Please..."
"You want me to fuck you?" Peter smirked. He could feel his own lust filling him up. He put a small hand on Will's chest and watched him squirm. "I think I can do that..." he repositioned himself at the end the bed and lifted the other man's heavy legs up over his shoulders. The legs combined probably weighed half as much as he did. The thick thighs were as thick as his waist and the calves were perfectly diamond shaped.
Peter slid himself closer and press his hard cock against Will's asshole. He watched as the other man's hips bucked again at the sensation. His body couldn't handle the pleasure building inside him. Especially as Peter pushed harder. It slid in fairly easily, but there was enough tension to feel it go the entire time. "More... More..." Will moaned. The magic of the house seemed to comply as another 2 inches were shaved off his dick and added onto Peter's. It slid deeper inside. His back arched as he felt his colon touched. "Ohhh!" the sensation was too much and he felt his dick cock back and then unload onto his abs.
"Fuck!" Peter added as he felt his own unleash inside the other man. Hearing the loud sensual 'Oh!' and feeling his asshole tighten around his dick was too much for him to handle. His own balls shot out copious amounts into the other man's anus. He could feel his body thrusting back and forth trying to get every drop out. The heavy balls easily held a lot more cum than his partners. "Damn..." he muttered slowly pulling his giant cock out. The thick 10 inch rod was a bit hard for his body to handle but he still seemed to do well with it. Or at least the way Will acted he did.