Boredom and annoyance drive Michelle and her stepbrother to masturbate together, their initial argument masked by the sound of running water. Michelle's wet pussy and big ass tease her stepbrother, who catches her in the bathroom. After heated words, they decide to masturbate openly, Michelle's eyes lingering on his thick, straight, huge cock. Her fantasy of feeling it inside her grows, but their moment is interrupted by an unexpected intrusion.