look up any word, like bae:

1 definition by Gregory B

 
1.
Originally a nick name for Mexicans greaser, beaner, pepper belly, either legally or illegally in the country. Originated in the American Southwest border states, Texas, New Mexico, Arizona, and California. Through common usage has come to mean citizens of any nation who have immigrated here illegally.
Most wet backs sure are hard working, cheap laborers.
by Gregory B July 04, 2006