A gun man, which comes from gat: old slang, meanging gun. Came from shortening Gattling gun to just gat. A gangsta's gun. "Gatman & Robin" by 50 cent and Eminem.
I got a gatman
There's a problem I'ma solve it
A nigga movin' around
With a big ass revolver and a bat, man
A getting money ass nigga , a rockstar, a drug user not abuser, , a person who just don't give a damn, a man that will have sexual relations with your mother, baby mother, sister, possibly your grandmother,
Gatman is the typical name any high school student takes up in school. To make himself look popular, even thou that person is a total loser and is always trying to get laid. You'll find that person on myspace all day, even in school that person would be using his cell to check his account on it. Gatmen are known to be perverts always trying to get some girl ass.