POV: Your step-sister is a horny exhibitionist and you ask to watch her cum, despite your family sitting in the room next to you. She nods in agreement and motions for you to stay quiet before taking her tits out, spreading her legs and revealing her hairy pussy. You watch her use her fingers and vibrator to bring herself to a quiet but intense orgasm before she hears someone get up in the other room and quickly covers up. (There actually was someone in the other room when I filmed this which is why I had to say quiet