Ok, here's your test, what is the speed of an unladen white swallow?
Beats me Sire I am but a lowly Knight
Bridgekeeper: What... is the air-speed velocity of an unladen swallow?
Arthur: What do you mean?
An African or European swallow? Bridgekeeper: Huh? I-- I don't know that! Auuuuuuuugh!
Bedevere: How do know so much about swallows?
Arthur: Well, you have to know these things when you're a king, you know.