Slang for "bro", or "brotha".
How one tool refers to, or greets another.
Hawaii claims the origin of this word, and it may have very well originated there- however it is now used more commonly by self-centered, orange-tanned, pierced, scene, and/or and other type of well-groomed dbag.
"Nah much man, I just got back from doing something understatedly cool that makes other guys wanna be like me. I think I'll go hang with some other rad brahs tonight, and we can just soak up each others' awesomeness."