Your sister comes barging into your room, very eager to share with you what she found; your porn stash on the laptop that mom and dad bought you for school work. And this definitely isn't school-related. She only wants one thing from you: To jerk off just like you do when you're alone. For some reason, she really wants to watch you jerk off, so you have no choice but to give her what she wants. She says to just pretend that you're watching one of your favorite porn videos. She excitedly watches you stroke your cock and starts to get into it because you actually do have a nice cock. She also makes it very clear that she has all of the power in this situation. Soon, she asks if she can touch it! "You're already stroking it in front of me. What difference will it make now?" She has a point. Now she's teasing you with her fingers and flaunting her body in front of you. She's such a little slut, she's not even wearing panties. She must get off on knowing that she has backed you into a corner. But you need to cum for her...or else!