When a place or establishment that you are at has reached it's Mexican population limit.

(noun) A successful type of theft which results in an acceptable, impressive and rewarding payday for the protagonist.

Ratio used to describe the capacity of a car inhabited by mexicans. Expressed as N=normal capacity of a car multiplied by the mexican capacity ratio of 3. Sometimes this ratio can be exceeded, but it is a good average of the number of mexicans that can cram themselves into a normal car.