Someone who is a professional at one
thing, but sucks with
everything else. Usually refers to athletes or some competitors that are at the top of their game, but can't seem to figure out how to not be shitty
people.
So Shane "Shakey" Bryne is a helluva racer and won first place, but blasting champagne up the
cheerleaders skirt goes to show that he's nothing but an asshat and a Jerk-Of-
Trade.