Jonathan lived with his mom and dad; Jennifer and Kent. Jennifer is a witch, which is quite rare and her family knows she is one. Jennifer and her husband have had a boring sex life for some time now and Jennifer had always wanted to try swapped sex. That is having sex in each others' bodies. Kent had considered her offer but always turned it down, saying "maybe next time". She was growing impatient and thought she might as well make it a surprise, she knew all he needs is a push and then he will go with the flow. The only caveat to the spell was that the targets will remain swapped until one of them orgasm.
Jonathan was away at a friend's for the evening so the parents took the opportunity for a night of fun, it'd been a while. Jonathan would be sitting playing games and whatever boys do so no one would disturb them. Jennifer planned out the encounter; Kent's favorite position was from behind, and Jennifer figured he'd want to still see them going at it, so why not do it in front of the mirror. She seduced him into bed and said she wanted to make the night special by using his favorite position. Little did he know she was about to make it even more special than that. Shortly after he'd penetrated her, she prepared the spell to swap their bodies. Suddenly Kent slapped her on the butt, making her lose focus ever so slightly on the spell. It was too late and the spell was complete, as her vision changed and next thing she knew she as staring at a TV-screen, obviously displaying a video game. She looked down and saw that she held a controller, and she recognized those clothes. She had swapped with her son Jonathan instead! Jennifer immediately realized that if she swapped with her son, that meant he was right now in her body being fucked by her husband... oh no!
Jonathan had the shock of his life as the world changed around him and suddenly he was on his hands and knees, moaning and panting as something rythmically thrusted into him from behind. He saw two big breasts bounce and flap under him and strands of blonde hair cascading down his shoulder. It didn't take long to figure out he was being fucked in a woman's body. But when he looked up into the mirror is when he was at a loss for words; he saw his mom staring back at him, and behind him was his dad holding him by the hips and pounding him in a place he'd never felt before. God it felt so good. This was so wrong though, Jonathan should put a stop to this, but for whatever reason he let it happen. Besides, imagine telling your dad that he's fucking his son in his wife's body, not the best of situations.
Jonathan figured that since his mom is a witch she must have swapped them, but why? He didn't get a chance to ponder on that however as the sensations of being fucked in his mom's body were overwhelming. He longed for the climax that was looming, his body needed release. Another 10 minutes of fucking later, Jonathan at long last received what he yearned for as his body started shaking and he experienced his first orgasm as a woman, his mother no less. His dad moaned loudly in unison as he came inside his wife's body that Jonathan now inhabited. The sensations of cum filling Jonathan put him on cloud nine, only to swap back to his old body shortly after, being back in his friend's house after this incredible experience. Yes, Jonathan overall enjoyed the entire thing, he even considered asking his mom to swap again.
Jennifer thought that it'd be best to let things play out and later erase her family members' memories of this night, unless Jonathan could convince her otherwise.