My early ist is from when I was about 4. I remember seeing a movie where this guy was tied up on a wheel that spun and he was whipped. I remember getting wet, and rubbing myself. I got caught several times masturbating by my parents (one of my nightmares now, lol). But then I would have fantasies that I was tied to my bed, and taken advantage of. It was awful though, I couldn't ever play with myself and get off when my arms we're "tied" above my head (just held there, lol).