I'm in my room, headphones on, listening to music and dancing around in my pajamas. With music blasting in my ears, I haven't heard you come in and haven't realized you're watching me. Suddenly, I turn around and notice you. What are you doing here?! Looks like your dick is hard... You've been staring at my buttcrack the whole time, am I right? Well, instead of doing things behind my back, why don't you pull out your cock and jerk off? Don't you want to cum all over your sister's buttcrack? Come on, stroke that cock for me...