It's a quirky little hole in the wall that serves mexican food on occasion, but is primarily a bar specializing in tequila and its applications. (Recalling your high school spanish, read the name again...it's funny, you see!)
The drink menu is a book full of incredible margaritas to be drunk straight or frozen, or there's tequila samplers to educate your palate, or you can just grab a beer.
Best bet - grab a half price margarita during happy hour (from 5-7) and a bean burrito from their free happy hour buffet. Bring friends.
Be careful though - my friends and I used to refer to this place as "the bar of truth" because the margaritas are quite strong, and tend to loosen lips quickly.