Funny Racial Joke

A cowboy walks into a bar and sits down. Across the bar is a Mexican man staring at him. So the cowboy orders a shot of whiskey, takes it, slams it down, and yells "TGIF".
The mexican, still staring at the cowboy orders a shot of tequila. Slams his down and yells "SPIT". They started going back and forth with it, growing louder and louder every time. Until the bartender, fed up with this, asks the cowboy, "do you even know what TGIF stands for?" Cowboy says, "well hell yeah it means thank god its friday" he says lok and asks the Mexican what SPIT stands for. The mexican replies, "stupid pendejo its thursday"