Quote from Michael Scott in The Dundies
Michael Scott: I mean, come on, Jan. What, it's a- You're dropping an A-bomb on me here. Jan: [on the phone] Really? I'm dropping an atomic bomb on you? Michael Scott: Well, yeah! I mean what is- What- Jan: No, you can't. You already had a party on May 5th for no reason. Michael Scott: No reason? It was the 05-05-05 party. It happens once every billion years.