Green’s Dictionary of Slang

(US black) a term of address to a man.

1953

L. Durst Jives of Dr. Hepcat (1989) 1: A group of fellows see a particular good dancer and are discussing him. ‘Jimson, you can believe that cat’s wings are not clipped because he is naturally buzzing cuzin. You better believe that he can work his ground smashers overtime. When that kitty puts on a mug it’s a killer.’.