A term that was coined during our college years.
When you see someone that you know but you don't feel
like talking to them, you do what you would do at 8 o'clock in the
morning on your way to
class (probably after a heavy night of drinking and a keg stand or two) and you are absolutely not in the mood for small talk, you look down or pretend not to see them.
Dude 1: "I
saw Jane on the
street yesterday."
Dude 2: "Did you say hello?"
Dude 1: "Hell no, I wasn't in the mood, gave her the 8 o'
clock."