Definitions by kill-o-wattz

O.B.A. 

One being of a bad-ass stance. O.B.A. is slang for "Official Bad-Ass." This term can be used to congratulate one for being recognized as an official bad-ass.

Wow, you just ate a whole pineapple, you are totally an O.B.A.

O.B.A. by kill-o-wattz May 14, 2008