Monty Python's Proof of African Swallows Carrying Coconuts

Guard: Are you suggesting that coconuts migrate?

King Arthur: Not at all. They could be carried.

Guard: What? A swallow carrying a coconut?

King Arthur: It could grip it by the husk!

Guard: It's not a question of where he grips it! It's a simple question of weight ratios! A five ounce bird could not carry a one pound coconut.

King Arthur: Well, it doesn't matter. Will you go and tell your master that Arthur from the Court of Camelot is here?

Guard: Listen. In order to maintain air-speed velocity, a swallow needs to beat its wings forty-three times every second, right?

King Arthur: Please!

Guard: Am I right?

King Arthur: I'm not interested! [A second guard approaches the parapet]

Guard 2: It could be carried by an African swallow!

Guard 1: Oh yeah. An African swallow, maybe -- but not a European swallow, that's my point.

Guard 2: Oh yeah, I agree with that.