I can't believe you would walk in on me like this! You're my stepbrother! Well, you probably have never even seen a girl naked before, have you? I guess I could show you a little bit, just don't tell Mom & Dad, okay? Have you ever even jerked off before? OMG, I guess I should teach you. You better be glad our step-parents aren't home! Here, you jerk off while I play with myself. Wait for me to count to ten so you can cum with me!