In this adult role-play, my adult sister wears a zip hoodie with nothing underneath and leaves it open so far that I cannot take my eyes off her breasts. Every time she leans forward, her nipples peek out and leave me rock hard. I try lowering her zipper while she sleeps, expecting her to wake up furious, but she already noticed my erection and was secretly turned on. Asking if I really care that much, she pulls the zipper down herself—and before I know it, my hand is on her breast.