You found your stepsister just before she was going to sneak out of the house to go to a rave. If you rat her out, though, be prepared. She snooped on your computer and she knows the kinky things you have been watching. You are into stepsister porn? You pervert! Will you keep her secret about the rave if she helps you to jerk off to her right now? You agree and immediately get your fat dick out and begin stroking it. Did you know that Alison hears you jerking off in your room at night? She likes listening to you. Go on and jerk off your dick just like you would if she were not there. Alison takes off her frilly skirt and lets you look at her pretty ass. She guides you through your taboo jerk-off session. You cannot believe that she is letting you do this. Do you fantasize about licking your stepsister's nipples? Alison knows that you do and she cannot wait to see how full of cum your balls are for her. "Do you like my pussy, big step-brother?" she teases.