Tim was playing video games like he did on most nights when all of a sudden he felt light-headed, and seconds later he found himself looking into a mirror where he saw the reflections of his buddy Adam, naked, behind his equally naked girlfriend Tara. But he felt a strange sensation between his legs as he felt something pushing inside of him. He turned his head, looking straight at his buddy, a bit horrified at the realization, but just as he was about to say something, a strong pleasurable feeling overcame him causing him to turn back to the mirror and moan. He felt his body react to the situation, and getting turned on by what the mirror was reflecting wasn't helping. As these pleasurable sensation increased with every thrust, he felt his arms give out causing him to fall onto the bed, gripping at the sheets with his hands as his new ass was now in the air, getting pounded even harder. Tim soon felt his body start to shake as an even bigger sensation was building up, but just as soon as it built up, he felt an explosion inside him, giving Tim the best orgasm he ever had.
The two fell back onto the bed, exhausted, Tim tried to wrap his head around what happened, as he got out of bed. A couple minutes later, Adam got a text from someone claiming to be Tara which said "Babe, Something has happened, it's me Tara, I'm inside a little boy's body. Turn on the news!" Adam, a bit confused, decided to turn on the tv, where the newsanchors reported a massive worldwide event which caused mostly everyone to switch bodies. Adam looked at his girlfriend's body, currently checking herself out in the mirror and asked "You're not really Tara are you?" Tim turned around, cheeks extremely red, as he replied "No Adam, it's me Tim. I found myself in Tara's body." Adam shocked "Tim! Why didn't you tell me it was you! I would've stopped!" Tim blushing even more "Well I was going to, but it just felt so good. I've only been a girl for 10 minutes and I can already say sex is better as a girl." As he laughed, trying to break the tension.
A couple of weeks have passed since scientists announced that the effects would be permanent, naturally causing Adam and Tara to end their relationship. But as Adam and Tim remained friends, their relationship grew to where they were no longer just friends. And the two couldn't be happier.