meaning of Acting the billygoat

Acting the billygoat meaning in Urban Dictionary

Used to describe a person being an idiot / being incredibly silly and stubborn. Originating from the billy goat itself, because of its outward ridiculous appearance (big horns and a beard... You be the judge) and because of their mating habbits. Two males fighting over a female will run at each other and butt heads to impress the female, which really, is a stupid way to go about it. Literally: Somebody who goes around and headbutts people.