"The original military term wingman defined a pilot who supports another pilot in a dangerous flying environment. Today we honor that bravery by using the same term to describe a guy who misleads someone into sleeping with you."
Man #1: Excuse me, miss?
Man#1: Care to dance?
Hottie: Oh, I wish I could, but i'm here with my friend, Janice.
Man #2 (wingman): Hello, Janice. My, what a fetching third chin you have. May I buy us both several, several drinks?