The other one he uses is "Your a daisy if you do", which may be rather apparent but it references another colloquialism of "pushing up daises" in other words be

The other one he uses is "Your a daisy if you do", which may be rather apparent but it references another colloquialism of "pushing up daises" in other words being dead and therefore plant food. Both of which, at least in the south, pretty much mean that the person is done talking and are serious warnings, that they are done talking. I would assume that they where also used in the American west at a time given that a lot of Confederate Civil War soldiers went west after the war. The movies use of them was actually well played as Holiday was from Georgia and would have shared many of the colloquialisms that where in use in the deep south of Florida, Alabama, Mississippi, etc.