Peckernut
A derogatory term used by a parent to their child to indicate they are annoying or used when the child has performed a moronic act.
Dad: "You are truly a peckernut, Chris! What are you going to do next?"
or
Dad: "Go and play in the other room you peckernut. I am watching the game!"
or
Dad: "Go and play in the other room you peckernut. I am watching the game!"