1: A guy friend, usually semi-attractive, who acts as a friend and wingman for his friend who is trying to pick up an extremely attractive girl who is being blocked by her DUFF. This man is not afraid to sleep with a three hundred pound gorilla, and is a vital asset to his friend who is attempting to get with the hot girl.
2: The ultimate counter to the big fat friend
The Non-Discriminating friend's motto: So what if you're a cow? I'll nail you anyhow.