bungknocker
A generic insulting noun, coined by Butt-Head of MTV's Beavis and Butt-Head who also gave us words like, "fartknocker", "buttknocker", "Cornholio", "TP", "bunghole" (the asshole, not a hole in a keg), etc
{Beavis}: What was that, Butt-Head?
{Butt-Head}: Oh just some bungknocker on TV, twirling these big dumb sticks, lighting them, twirling them again, and like setting himself on fire or something.
{Butt-Head}: Oh just some bungknocker on TV, twirling these big dumb sticks, lighting them, twirling them again, and like setting himself on fire or something.