Cheating With Your Wife's Sister

Your wife's sister is staying at your house for a while. While you and your wife are out to lunch, her sister Daisy is alone at your house masturbating using a bluetooth vibrator and her phone! Unfortunately, she didn't hear you guys come home, so she hurriedly tries to hide what's going on when you come into the room. She thinks she's in the clear until you sit down next to her after your wife leaves the room, and you take her phone and control the toy for her! She has to stifle her moans when your wife comes back in because you're getting her sister off right in front of her! When she leaves to run errands, that's when the real fun starts.