A person who is half mexican (wetback) and half white (cracker).
Bobby Sue Hernandez is a total wet cracker. WHY? Because her mom's a cracker and her daddy's a wetback!
A game in which the all male contestants stand around a cracker masturbating vigorously until they ejaculate on it. The last member to ejaculate loses, and has to eat the cracker.
Guys, let's play wet cracker!
Aww, Gross! Billy had to eat the wet cracker.