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You're home for the holidays and your step-sister is so excited to see you, you always used to be close, but since you got with your new GF, you never see each other. Your step-sister is so disappointed when you tell her your GF is here too, and she's in the next room unpacking. She hates your step-sister because she thinks your step-sister is a slut, dresses inappropriately, and she's jealous that you think your step-sister is hotter than she is. Your step-sister thinks it's hot that you think she's sexy. She has a better body than your ugly fat GF. Your step-sister teases you, giggling about the thought of you being hard over her. She sexily takes off her top to expose her perfect big tits, sliding off her booty shorts, letting you peak at her pretty pink pussy, making your cock swell. Suddenly, you don't care about your GF being in the house, you want your hot step-sister, you want to fuck her, you want your cock in her slutty mouth and tight wet pussy... you want your cum filling and leaking out of her.