Your step sisters panties

What are you doing in my panty drawer? Are my knickers wrapped around your cock? What the hell? I'm going to have to tell Mom and Dad what you've been doing! You can't go into my panty drawer and start wanking off on them -- I'm your stepsister! It's disgusting. It's wrong. Plus, I don't want cum all over my panties. I'm going to have to tell Mom and Dad. No, there's no use begging. Begging isn't going to help. I really should tell on you, but I might be persuaded not to. You know, I quite liked what you were doing with your cock. It turned me on a bit. It made my pussy wet to see my panties wrapped around your cock. Tell you what... I'll do a little deal with you. If you'll show me how much you like to wank into my panties, I could keep all this a secret. That's right. You're going to have to wank your cock in front of me! That's the deal. If you don't want to do that, then I'll just run and tell Mom and Dad. I thought so! Now, do exactly as I say