Greg: "Man that guy's a nipple stick."
Steve: "Why What'd he do?"
Greg: "He tried to fight me cuz he thought I was fuckin' his girlfriend."
Steve: "Wow, he is a nipple stick."
This is a term which has been carefully refined over the past century. Originating from the expression 'udder on a pole', this phrase came into usage in polite society in the late 20th century.
Meaning: You are daft. Affectionate insult.