Still wearing the jockstrap, Ryan pulls up his shorts and decides to get out some energy by exercising. As he does so, the reality of the situation dawns on Mikey, who struggles to try to get back into his old body. This just turns on Ryan, who pushes his new body even harder.
After a few hours, Ryan collapses in the locker room, having given his new body a beating of a workout. Mikey again tries to push his way in, but his old flesh no longer will budge for him.
"It's pointless kid, give up. I'm in control now," Ryan says out loud in Mikey's young voice with a smirk on his face. "But hey, let me give you a hard earned reward."
He reaches into his shorts past the jockstrap and starts working his dick again. Despite being small, Mikey's dick felt much the same to Ryan as his own in feel in his hand. He'd likely be similarly endowed once he went through puberty. He played with the sensitive head as he got to feel the pleasure of this body firsthand this time. Quickly, he was already on the edge of cumming, and decided he'd get this load done with quickly. After all, this was still the inferior seed that Mikey had left him with. Out with the old, and in with the new.
As he came though, he felt a strange tingling sensation, which continued after his many ropes of young cum were expelled and contained by the jockstrap. The jockstrap became warm, and then warmer, and then nearly burning. He raced to his feet, taking his shorts off and then pulling the jockstrap from his young body and tossing it aside. He wasn't sure what was going on as he saw the jockstrap begin to move and grow.
Mikey meanwhile was feeling very strange. That last load of cum seemed to have enacted some reaction, and he felt his new alien jockstrap body begin to change, to feel familiar, to become human once more.
The two of them watched as the chages unfolded in disbelief until the heat subsided, and Mikey rose to his feet, a bit awkwardly and gingerly, as they seemed longer. He looked at his old body who wore a look of utter shock, before turning to the mirror and confirming the change himself.
He was now Ryan Standish. And he was ecstatic.
Ryan got his wits about him and rushed over to his old body as Mikey felt it up in all of its naked glory.
"Hey, I don't know what you did, but turn back into a jock," Ryan pleaded. "I can fix this, we can go back to normal."
"I think I like things better this way," Mikey says in Ryan's mature voice. "Top man on campus, no one calling me scrawny, skipping these terrible years right to starting college next year..."
Ryan hated the sound of all of that. He realized until he put in the work for Mikey's body he'd still be tormented while Mikey thrived off the fruits of his labor.
"Please no," Ryan said as his eyes well up. "You can't do this to me."
Mikey turns to Ryan with a smirk.
"It's pointless kid, give up," he says echoing Ryan's words back to him. "I'm in control now."
Ryan falls to his knees, begging.
"Please, I'll do anything if you give it back," he says, pleading. "I'll become your personal trainer. I'll keep the bullies away, I'll help you get in with the cool kids. I'll teach you about sex! Just give it back!"
"Really?" Mikey asks. "If you're willing to do all of that, then I might consider it. But you're going to do it all BEFORE I give you your body back, got it?"
Ryan looked up and saw how large his old body was compared to his new one. He didn't like being powerless in this situation, but since Mikey was in control now, he'd have to hope he could make Mikey's life seem more appealing than his old one.
"Only if you keep my body in top shape," Ryan says relenting to the demands. "It'll be part of the training."
"Sure, why not," Mikey says grinning uncharacteristically of Ryan. He couldn't hide his excitement, which was prevalent in his groin being at half-mast. This embarrassed Ryan to see his old body turned on like this. Mikey saw his embarrassment and looked down only to smile more.
"Hey, let me give you a hard earned reward," he says, as he sits down on a bench and pats the seat next to him before pointing to his semi-hard dick. "How about you help me with this problem, eh?"
Ryan sighs and sits next to his former body, before reaching over with his smaller hand and grasping his old dick. Maybe it was the difference in hand size, or angle, but it felt entirely aluen to him, as if the last 5 years of diligent stroking were entirely foreign territory to him. He quickly got to work as Mikey moaned in his old voice.
As he made his old body climax, and Mikey got up to go get changed in Ryan's clothes in his locker, Ryan considered what he was going to do next. He had to get his body back. By any means necessary.