A word that uncool people use to try and make themselves look cool. The correct word is "Badman" however by adding an "a" The person thinks they now sound extremely cool, but they just sound like a total douchebag/idiot/nob/moron etc.
Idiot : Haha it's cos he's a badaman!
Everyone else : Dude, does that guy think he's cool by saying badaman? whatta douche!