Knock on wood is a saying for good luck. I think that started when someone went to someone's door to see if someone was home. "I hope Joe's home, knock on wood!"
Mitch HedbergWhen you open the elevator on the top floor of a building and the other guy doesn't get out, something is seriously wrong.
Mitch HedbergI was at this casino minding my own business, and this guy came up to me and said, 'You're gonna have to move, you're blocking a fire exit.' As though if there was a fire, I wasn't gonna run. If you're flammible and have legs, you are never blocking a fire exit.
Mitch Hedberg