A person whose favourite activity is touching kids
John - See Tim over there? I heard he's a professional kiddy fiddler.
Sally - Oh really? So was my dad.
Used for when someone goes too far out of line (Pulled from "Scott Pilgrim Vs. The World)
Todd:"What? Im not afraid to hit a girl."
Scott:"That's it! You Cocky Cock! You will pay for your crimes against humanity!"