Your step-sis caught you perving on her Facebook pictures on your computer. Now you're gonna have to do anything she says so she doesn't tell on you. Admitting that you jerk off to your step-sister is so embarrassing but having to do it right in front of her while she completely humiliates you and teases you with her huge double DD tits is almost too much to handle. She totally owns you now.

Your step-sis decides to keep your secrets in the most humiliating way.