Substitute teacher, 30, 'videos herself masturbating in front of. Amateur black teen girl masturbate. Young sweet teen girl masturbating. Behind the Scenes at Masturbate-a-Thon 2010 (Pics NSFW). South Korean students caught masturbating in front of female teacher. Can a Doctor Tell if You've Been Masturbating? - KidsHealth. Masturbation: Why it happens and what to do about it. Teen girl bed..