As the house echoes with their parents' snores, a curious Michelle tiptoes into her stepbrother's room. She's been craving his cock since she caught him masturbating. His massive dick, even flaccid, makes her drool. He wakes, surprised, but her eager eyes and open robe reveal her intentions. She climbs onto his lap, grinding her wet pussy against his stiffening cock. He hesitates, then grabs her hips, thrusting upwards as she rides him, their siblings' bond forgotten in the heat of their taboo fuck.