In the dim, steamy light of the bathroom, a sister sneakily enters, hoping to catch her brother in a compromising position. As she creeps closer, she finds him in the shower, water cascading down his toned body. He's masturbating, his thick cock in hand, totally absorbed in his self-pleasure. She watches, hidden, as he strokes faster, his moans barely audible over the running water. Just as he's about to finish, she steps out, startling him, and he quickly covers up, embarrassed.