The worst thing you could ever be called in your entire life in the entire history of the entire world. If you are called this exact insult you will blow up on the spot and your remains will be shot into the sun.
HEY, you! You stole my copy of BIG CHUNGUS 4! You are a fricknugget!
NOOOOOOO *explodes* *sun has remains sent to it*
a noun used to describe a person one believes to be bizarre, quirky, edgy, awkward, outlandish, eccentric, idiosyncratic, crazy, peculiar, odd, strange, queer, freakish, zany, offbeat