Trapped in the bathroom, a brother and sister, both horny and frustrated, can't resist the temptation any longer. The brother, rock-hard and throbbing, makes the first move, pressing his sister against the wall and grinding his hips into her. She gasps, her pussy clenching at the feeling of his cock through their clothes. They kiss, their tongues tangling as they explore each other's mouths. The sister, eager and wet, pulls down her brother's pants, revealing his thick, ready cock. She strokes it, feeling the veins pulse under her touch. He lifts her onto the counter, her legs wrapping around him, and she guides him inside her. They moan together, lost in the forbidden pleasure of each other's bodies.