Top definition
Someone, normally a guy, who thinks no one can beat him in a fight, a gun battle, or any other confrontation.
John tries to warn Mike that no one is invincible these days and to stop starting fights, but he won't listen cuz he's Billybadass.
by Sahale December 21, 2008
3
A person of the male persuasion who considers themselves to be peticularly hard or who thinks they are a thug. In most cases those fitting this definition are merely insecure about the less than spectacular size of their wang.
by Jario Florez March 10, 2005
5
one who is known as a great fighter. intimidates others with his mere presence. usually employed as a doorman, security guard or body guard. 500 pound gorillas carrying badges have commonly been mistaken for a billy bad ass.
by Albert Einstein1 May 03, 2006
6
One who always dodges rocks. L.G.A. One who drives a black mustang convertible with white stripes and black bullitt wheels with a chrome lip. One who hates treacherous girls and hot boys.
by Kevin peter May 21, 2008