You know your step-sisters dirty little secret and you know exactly what you want from her in order to keep your parents from finding out - she needs to do a little strip tease for you! She thinks you're joking at first, but as more of her clothes come off the more frustrated and embarrassed she gets as she realizes you weren't joking. She offers you money instead but you don't want that, you just want to see her shake her tits in your face just like she does with the customers at the club!