Part 1 is here

Part 2 is here

Part 3 is here

Things got even more confusing that evening when Ben jumped into Peter's dad, leaving Peter's dad inside Peter's sister. Peter was still stuck in his mom's body when his dad sat him down and told him that Ben had agreed to switch back once Peter let Ben fuck him. Peter tried to explain that Ben had lied several times before, but his dad knew it was the only way to get out of his own daughter's body and back into his own.So Ben - in Peter's dad - took Peter - in his mom - to the bedroom. Ben laughed as he stripped naked, his cock curving up, already hard at the sight of Peter's mom. Peter couldn't forget that the hands touching him, the lips kissing him, the cock rubbing against him was his dad's. Nor could he forget that the naked skin, the small breasts and the glistening pussy that he owned were his mom's. Ben lay over him and slowly pressed his cock against Peter's entrance. Peter gasped as he felt his dad's cock penetrate him, sliding in through his hot wet folds, filling his mom's body completely. It felt kind of good being pounded, feeling the hot cock press him apart and a light moan escaped his lips involuntarily.Ben grunted and came, driving deep, filling Peter with spurts of hot cum. Then he hovered over Peter, grinning, his cock still deep inside. After mumbling some words Ben's eyes went unfocused and then blinked back into awareness."Mom?" Peter's dad asked. And then- "Oh, god!"Peter's dad's body recoiled, looking down at his cock with disgust as Peter struggled to sit up.Ben had returned to his own body, leaving Peter and his sister in their parent's bodies. Until they could figure out how Ben did it, they were stuck like this.

Chapter 7 of a serial about a misogynist transformed into his dream woman by a curse. His only way back is to take on 200 men in a year. Available on Body Swap Stories, Smashwords or Amazon.
https://bodyswapfiction.com/enter/?p=13292