Monaco is on FaceTime to her bit on the side and they're masturbating to each other. He prematurely blows his load and hangs up on Monaco. You, her stepbrother, has been perving on her since she starts and she has noticed you watching! She can see your bulging cock in your pants and wants you to pull it out so you can both wank together! She's so horny and wants you to shoot your cum for her!
