"I don't care how important your 'coven' meeting is. You're grounded and your mom told me I was supposed to make sure you stayed home while she's travelling for work." Joe put on a stern face, smirking at his step-sister Alyssa. Joe still lived with his family at home despite being nearly thirty. Alyssa was ten years younger than him so he was used to being her babysitter and occassional jailor. More than used to it, as his smirk revealed, he kind of liked bossing her around.
Alyssa though was well past wanting Joe to watch over her and damned sure sick of his cocky grin. In the past she'd just have to put up with it, but she realized now that was no longer true.
"Oh yeah? Well maybe if I went to the coven meeting, I'd lbe able to undo this! FEMINICUS SLUTUS TOTALUS!" Alyssa pointed at Joe as she cast the spell. There was a flash of light and when it passed, where Joe had been was now a busty blond woman wearing an absurd fishnet shirt.
"What the- HEY!" Joe grumbled, looking down and seeing his new tits clearly through his shirt. "You can't just- you'd better turn me back right now!" He squeaked, but as he stared at his new body he started to feel... hot.
"Can't I'm afraid." It was Alyssa's time to smirk, "Gotta go to the coven meeting to recharge in order to do a powerful transformation spell like that, so if you'll excuse me-" She tried to push past her former step-brother now step-sister.
Joe was stuck staring at his tits for a minute, but then he rushed after his step-sister, catching her by the stairs. "I'm going to call your mom!"
Alyssa paused on hearing that. Her mother was a witch like herself after all. She might do a lot of things to Alyssa if she found her abusing her powers...
"I think you'll be enjoying yourself too much for that." Alyssa recalled a spell she'd recently learned that sounded particularly kinky, but she didn't know what it did. "BINDUS ORGAMUS!" She shouted.
Another flash and when it passed Joe was the same woman as before, only now she was naked and bound and gagged with a vibrator buzzing cheerfully between her legs.
Joe glared at his step-sister for a moment before the incredible sensations the vibrator was producing and his eyes rolled back and a muffled moan escaped the ball gag in his mouth.
"Wow." Alyssa said, surprised by how much the spell had accomplished, "Well I'll be back in a couple hours. Don't go anywhere!" Alyssa laughed and left.
When Alyssa finally returned Joe had cum he didn't even know how many times, each one almost painfully incredible. To Alyssa's surprise when she ungagged him, Joe offered to not tell her mom if she'd cast those two spells on him every now and again.
Alyssa smiled and agreed. It was good to be a witch.