The general term to describe caucasians that are of the belief that all hispanic people come from Mexico, and nowhere else.
Tom: "Ey man, where's the new kid from?"
Tim: "well,his name is Jose, he must be Mexican"
Jose: "ey you mind if i sit here?"
Tom: "no man, its cool. so hey um...where you from?"
tim: "SWEET! what part of mexico is that?!"
Jose: "Ignorant Gringo"
(jose then proceeds to spit in Tim's eyeball)