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.