"A-alright, I guess you can see her- I mean, m-my ass..." Sam sputtered awkwardly, raising her skirt to reveal her plump butt in her tight black leggings, the curvature of her booty and her black panties clearly visible through the semi-opaque fabric. She looked back at her tormentor Jack, who clearly seemed to be enjoying the view greatly.

Jack smiled, reaching out and squeezing a handful of her backside before she could protest. Sam squeaked in surprise, but bit her bottom lip as she resisted the urge to fight back, both mortified of her humiliation and terrified of being changed any further. It was already incredibly embarrassing being swapped into the dorky high school president's body (and a girl, no less!), but now she was being forced to show off her body like some slut! She wished she could knock him out or somehow stop him, but in her new body she was too timid, and besides, she would be too weak to fight now anyhow. She just hoped that Jack wouldn't be tempted to take this power any further...

Mikey was a popular, loud and handsome member of the school soccer team who was sometimes a bully to others he considered less than him, and so was their class president Sam, an intelligent but prude teacher's pet with a shy personality who also notoriously had one of the best asses in school hidden underneath her skirt. The two often butt heads due to their differing personalities, with their classmates caught in the crossfire. Jack, a nerd who despised both of them, had found an old magic tome in an old bookshop and had decided to teach the two a lesson - he would swap their bodies for a day to give them a better perspective on each other's circumstances. Even he was surprised by how well it worked: Sam (in Mikey's body) was being brash and playing sports outside with his old friends, while Mikey (in Sam's body) was quiet and paying attention in class. It appeared that the spell made each of them adopt their new name and some personality characteristics for the duration.

Seeing that this was his chance, Jack decided to use his position as their antagonist to his advantage by threatening to not swap them back unless Sam (formerly Mikey) did whatever he said, and first on the agenda was giving him a chance to check out the girl's fat ass. It was unusual seeing Sam, usually a total ice queen, so submissive and slutty. Meanwhile Sam was screaming internally, struggling against her mind's fear of being treated like a woman and her body's disgust with anything sexual. But she knew she had to hold it together and let this nerd do whatever he wanted, otherwise she'd be trapped like this forever.

Sam could tell Jack was enjoying groping her rump, but she shuddered as she saw the tent in the front of his pants. She tried to look away, believing she was still a straight guy on the inside, but something about her body was making her hot in oh-too-familiar ways. A wetness was beginning to form in the front of her panties as she felt herself being used and ogled like a sex toy, totally under the control of her oppressor as being in this compromising position unlocked her body's natural affinity for being dominated. When she saw him unzip his pants and pull his hard cock out she barely resisted, and minutes later the two would be fucking over one of the desks in an empty classroom, cheeks clapping and getting spanked as Sam choked back moans of intense pleasure getting screwed from behind.

Later that day Jack would realize that he couldn't find the spellbook and was unable to turn them back, but it all worked out in the end: Mikey seemed to adore being a popular athlete, and Sam enjoyed being his girlfriend even if people said the relationship came out of nowhere. And the best part was that as class president she had the keys to every building and room in the school, which gave the pair plenty of quiet places to spend some extra 'quality time' together during their breaks...