"Jeremy, I know that both of us are straight." said Ryan.
"What are you thinking of?" asked Jeremy, although he already knew the answer.
"Jeremy, I want to become your cock." said Ryan.
"Really? I mean, are you sure?" asked Jeremy.
"Yes." said Ryan.
"Fine." agreed Jeremy. "Let's do this."
The boys went up to their room and locked the door. The brothers stripped down and put their clothes off to the side.
"Okay, Ryan." said Jeremy. "Let's get this over with."
Ryan put his arm out, concentrated, and touched Jeremy's penis. This time, both of the boys felt the tingling sensation. Jeremy watched in horror as his penis and testicles slithered up inside his body. His crotch smoothed over. Ryan suddenly pressed his ass on Jeremy's crotch. Ryan's buttocks expanded and joined with Jeremy's body. Both boys felt the sensation of being part of one body, as well as the immense pleasure that seemed to come with every transformation.
Ryan suddenly began to shrink, his feet lifting off from the floor. Ryan shrank until he was the size of Jeremy's penis. Both boys watched in pleasure as Ryan's legs expanded, Ryan's skin wrinkling. Ryan's legs had become Jeremy's testicles.
As Jeremy watched this, he began to feel like he was getting an erection. Sure enough, Ryan began to stiffen, his internal organs disappearing. Ryan's own penis slithered up inside of him like Jeremy's had. Ryan's insides were being replaced by a tube that went throughout his upper body, that had come from deep within Jeremy. Ryan's ears and hair slithered inside his head. His eyes and nose smoothed over.
Jeremy watched as Ryan's chest and back suddenly became more rounded. Ryan's nipples and belly button disappeared. Ryan's neck seemed to shrink into his body and his arms and shoulders sucked into the side of Ryan's torso, which was now Ryan's shaft. Jeremy's blood pumped through Ryan's body as Jeremy's erection got bigger. The skin on Ryan's head suddenly darkened and puffed out a little. Jeremy's mouth migrated to the top of his head. Ryan's head grew more sensitive.
The transformation was complete. Ryan had successfully morphed into Jeremy's penis and testicles. Ryan still had consciousness. Also, since both boys were sharing the same body, Jeremy heard Ryan's voice in his head.
"Hey Jeremy." said Ryan. "This is amazing. We have got to get laid."
"I know." said Jeremy. "I can't believe I'm talking to my dick."
"I know, Right?!" said Ryan.