Clad in nothing but white socks, I sneak into my Latina step-sister's room, her thick, curvy form illuminated by the moonlight streaming through her window. She's awake, playing with herself, her big tits heaving with each breath. I join her, my cock already hard, and she greedily takes me in, her big ass bouncing as she rides me reverse cowgirl. I grab her thick thighs, pulling her down as I thrust up, filling her with my load. Four times I come, each time her big ass taking every drop.