"Hey Pat... You got a second? We've got a big problem here... Why isn't there any data in this report for May? I KNOW there should be something there from last month."

"Let me see... Hmmm, I'm not even sure where this report pulls from... Oh, here's the problem. You're looking at May 2002, goofball."

(Yes, that really happened.)

(Yes, I really called him "goofball". It just slipped out.)