You are spying on me while I shower. You notice me turn the water off so you quickly hide around the corner. You peek back around and watch me as I dry myself. I walk into my bedroom and lay down on the bed. I begin to touch myself. You keep watching from a distance. You over balance and the door makes a loud noise. Busted! I order you into my room and chastise you for being a creepy little virgin loser. You're horrified to find out that I know you're still a virgin. Even though you're my loser little brother, I do still care about you. I want you to babe somewhat decent at fucking when you eventually get with a girl. So, I do what feels like the sisterly thing to do and I walk you through how to fuck a girl by masturbating right in front of you!