Any Black or White person who does the odd jobs most Mexican immigrants do. This could be yard work, light construction or selling items by the roadside. They are often still found in areas through out the American south and parts of California where times are tough.
What! You went to college for 4 years just to end up being a gardener? What did you go to school for? To be a professional Mexican?
A person of Mexican origin who does such tasks as mowing lawns, janitorial work, etc.
Dude 1: Man, I don't feel like mowing my lawn.
Dude 2: Why don't you hire a Professional Mexican to do it.