somthing that is mexican and excellent

Exelent in the Mexican sense.

When something is excellent in Mexico, or involving Mexicans.

A combination of the words "mexican" and "excellent", used to describe something that is so great that no other adjective that can get the point across.

see minteresting, the lesser of the two ultimate contractions, meaning most excellent... spawned in my mind as a direct consequence of Bill and Ted's Journeys and Adventures, bogus and otherwise...
just a better manner of expressing ones joy.

Something really good that hails from Mexico.