what does that mean?

Heck if I know, but it sounds dirty.

He's probably talking about a Cadillac when he says "catty" Thats usually what rappers are talking about...cars, ice, girls, ridiculous dance moves. Are you sure he doesn't say "move from the patty to the caddy?" If not then maybe he's got a hamburger cooking on the patio and he wants to take it and go for a ride in the caddy. lol, I don't know, thats the best I've got