You're on holiday with your step sister and you've popped into her room to see her. She is under the impression that you have been peeping on her around the pool, trying to see what's under her clothes.
She tells you she's a bit worried about college next year as she's never seen a dick in real life, so maybe you guys could help each other out?
She knows it's taboo, but she removes the towel and teases you with her curves, asking you to wank for her, your slutty step sis. She strips off, grabbing your cock, telling you to cum all over her pussy and cover her in spunk