You walk down the hall and see that your sis didn't close the bathroom door properly. You know it's wrong but you can't stop yourself from peeking. She looks so hot in just a white towel. She takes it of get into the shower. You feel so wrong but can't stop looking. You watch her slowly covering her body with foam and it looks so hot, you can't help but touch yourself. At some point she puts shower head between her legs. What is she doing?? Suddenly you realize she is masturbating. Oh god now you feel even worse looking at her doing this, but you can't stop. You watch her playing with herself with shower head and her fingers. You know you might get noticed, you know you shouldn't be doing it, but it simply makes you more horny. You spy on her until she cums really hard having no idea you're there beeing a total creep. When she's done showering, she get's out and covers her hot wet body in lotion. You feel like she's doing that on purpose, that's how hot she looks and acts. Suddenly she notices you...