GS-327 — Mutual Masturbation With My Friend's Sister, Showing Each Other Our Genitals. I Was Watching An Erotic Video At My Friend's House, And When My Friend Went Out, I Couldn't Help It And Started Masturbating! But My Friend's Sister Found Me! "What Are You Looking At?" I Said To Her, "I Want To Masturbate Too, So Show Me More..."

I was watching an adult video at my friend's house and I couldn't hold back any longer, so I started masturbating when my friend left...but my friend's sister saw me! Then my friend's sister said she wanted to masturbate too, so we showed each other our genitals! We got really excited about showing each other our genitals and masturbating together! We even had sex in my sister's room, hiding from my friend when she came home!