Typically a scenario when there are
two couples on a date and a fifth 'wheel' joins the group. While the couples carry on and keep the date
rolling forward, the fifth wheel sits on the back of the group and gives no real contribution to the progression of the
evening.
Guy #1: Dude, why was Mike so pissed all night when we went out?
Guy #2: He was just annoyed that he was jeeping with us the whole
time.