Your sister is a prude. She's always a bitch to you, and all other guys as well. She always wears baggy clothes, but you just KNOW she has a smoking hot body underneath it all. If only she were sluttier... Well, you've been working on a trick to make your fantasies come true. You enter her room one day, and she promptly tells you to leave her alone. But, with a snap of your fingers, her personality changes completely. She's dumb as a rock, a total airhead, bouncing and giggling. You snap your fingers again, and suddenly your sister is only wearing a tiny gold bikini. She marvels at her new outfit, showing it off to you and bouncing her tits. Your sister then remarks that she never noticed how hot her brother was. You've done it -- you've turned your sister into a mindless, slutty bimbo. She pours baby oil on her tits for you, rubbing and groping them, then inviting you to grab them as well. Your sister begs to see your cock, saying that it must be so big. You reveal your erection and immediately your sister gets down on her knees, pleading to suck you off. She takes you in her mouth, giving you a sloppy blowjob. Your sister then titty fucks you, saying how she wants your cock inside of her next. She climbs on top of you and expertly rides your cock. Your sister tells you that she's so happy to be a mindless cumslut for you. You then lay her on her back and start to pound her in missionary. She loves how her brother's cock makes her feel. She's moaning and begging you to blow your load inside of her. You cum in her pussy and watch it drip out. You snap your fingers again, and your sister has her original personality back. She's shocked and confused to be in a compromising position with you, but confesses she was well aware of how amazing your cock made her feel. She tells you that you two can fuck again sometime, she supposes. | Tags: big tits, brunette, long hair, big boobs, natural tits, role play, roleplay, sister, taboo, POV, bimbofication, transformation fantasy, submissive sluts, blowjob, BJ, sloppy, titty fuck, cowgirl, riding, shiny fetish, bikini, boob bouncing, missionary, dirty talk, creampie, baby oil