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Chapter 16 by zorro zorro

What is Mark's experiment?

Two cocks, one hole

Jason nodded enthusiastically, anticipating getting more cum into his hungry asshole.

"Alright then, climb out of the bed for a second," Mark said, Jason obliging as he got to his feet. Mark led both twins over to Jason, their eyes wandering over Jason's body, moans escaping from their lips as their cocks twitched in need. "Wolfgang, lay down on the bed," Mark said to one of the twins, who obeyed without question, laying down on his back on Jason's bed, his gaze still on Jason. Mark grabbed a nearby bottle of lube and began lubing up Wolfgang's cock, causing the Wolfgang to loudly moan, his cock impossibly hard and inconceivably horny. When Mark finished, he motion to Jason to climb onto the bed. "You know what to do next," Mark said.

Jason spared no time in climbing on top of Wolfgang, guiding the man's cock towards his asshole and driving it inside. Jason and Wolfgang moaned, Wolfgang's cock sliding inside inch by inch until it was fully inside Jason's hole. Jason began riding Wolfgang's cock, sliding it in and out of his ass as he and the man fucking him were moaning and grunting in pure ecstasy. "OH FUCK YES, STRETCH MY ASS, FUCK ME GOOD!" Jason yelled, slamming his ass down again and again onto the thick cock he was riding. The german's cock was stretching out his ass, filling him up so deep and so much. He slammed down again and again onto the cock, letting the full length escape with only the head of the cock still in him, before slamming back down and letting the entire thing fill him up. It felt amazing.

"Jason, stop moving for a second," Mark said, causing Jason to whine, but obey as he slowly came to a stop, the full length of the German's cock stuck deep in his ass. He enjoyed the feeling nonetheless, but he wanted nothing more than to keep getting fucked. "Lay down on top of him," Mark said, Jason obliging as he lay down on Wolfgang's chest, his head nuzzling into the German man's neck. Jason heard some movement from behind him, sensing another body climbing into the bed. He soon felt something prodding against his already stuffed asshole, something hard and slippery, slowly forcing its way into Jason's already overstuffed ass.

"Uh, what..." Jason began to say, before feeling his asshole give way and the head of a second cock slip inside his ass. "OH FUCK!" he yelled, his head snapping back as pleasure shot through him. Jason turned his head back sharply, seeing the other twin, Dietrich, behind him. The 2nd German twin had joined the fuck session, managing to slip his cock into Jason's already full asshole and sliding inside slowly. All three men were moaning loudly, Jason gritting his teeth as his already overfilled hole was stretching further than he thought possible, allowing the 2nd cock to slip further inside before finally entering completely. Both German's cocks fully inside Jason's asshole and they began to fuck him as hard as they could, with Jason crying out in pleasure.

"Alright boys, you have fun now, I'm going to clean myself up a bit," Mark said, beginning to make his way to the shower in Jason's room. "I hope you don't mind if I use your shower Jason," he said, chuckling as the twins continued sliding their cocks in and out of Jason's ass as fast and rough as they could muster. Jason's asshole was being stretched further than he ever thought possible, with both cocks acting in unison like one giant cock as they plowed into Jason. The German twins were grunting and moaning loudly as they slammed again and again into Jason, their cocks **** to release their sticky loads. Jason couldn't help but scream in absolute joy, his senses overloading at the two men were busy fucking him senseless, using him to get themselves off.

"OH MY FUCK, YES!" Jason screamed, practically a rag doll in between the two men as they fucked him mercilessly. With their conditioning their libido's had been cranked up a thousand fold, making them pound Jason's ass in desperation and need. They were making no effort to be gentle as their cocks acted as one, filling Jason again and again as he screamed in euphoric bliss. "THAT'S RIGHT, STRETCH MY HOLE, FUCK ME WITH YOUR BIG COCKS!" Jason yelled, "FUCK YES! YES! YES! YES! FUCK ME! RAM MY ASS UNTIL I CAN'T STAND IT, TEAR MY ASS APART WITH YOUR FAT COCKS!"

Fifteen minutes went by as Mark exited the shower and began toweling himself off. He looked over at the three men in the trows of passion, sweat covering their bodies as the twins continued slamming into Jason's ass without reprieve. Jason could barely move at this point, exhaustion settling in as the men treated him like nothing more than an object, just a fuck toy to get themselves off. He laid on Wolfgang's chest as his fuck session carried on, moaning and shouting in joy.

"Yesssss.... fuck me you bastards," he groaned, "fuck me... cum in me! SHOOT YOUR LOADS IN MY ASS! CUM! CUUUUM!"

"Oh Jason, by the way," Mark began, holding up the clicker, "they can't actually cum unless I click this again".

Jason's eyes widened, looking over at Mark as Mark held up the clicker. As much as he loved being stretched out by the two big cocks currently fucking him, what he needed most of all was to feel their hot loads filling up his ass. The German's had paid no heed to Mark's words as if they hadn't even heard him speak, too busy concentrating on satisfying their cocks in Jason's hole, slamming into him as hard as they had been since the very beginning, not having slowed down for even a second.

Jason looked into Mark's eyes with a look of desperation, pleading and whining like a needy slut, using what little strength he had to lift himself up in between the two German men fucking him senseless. "Oh fuck... please let them cum, let them *gasp* fill me up *moan* oh god, OH GOD! I NEED THEIR CUM, PLEASE LET THEM FILL ME WITH THEIR HOT CUUUUUM!" Jason screamed.

What happens next?

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