ARTHUR: Whoa!
GUARD #1: [behind the battlements] Who goes there?
ARTHUR: It is I, Arthur, son of Uther Pendragon from the castle of Camelot. King of the Britons; defeater of the Saxons; sovereign of ALL England!
GUARD #1: Pull the other one!
ARTHUR: I am! And this is my trusty servant Patsy. We have ridden the length and breadth of the land in search of knights who will join me in my court at Camelot. I must speak with your lord and master!
GUARD #1: What, ridden on a horse?
ARTHUR: Yes.
GUARD #1: You're using coconuts!
ARTHUR: What?
GUARD #1: You've got two empty halves of coconuts and you're bangin' 'em together!
ARTHUR: So? We have ridden since the snows of winter covered this land, through the kingdom of Mercea, through -
GUARD #1: Where'd you get the coconuts?
ARTHUR: We found them!
GUARD #1: Found them?! In Mercea?! The coconuts tropical!
ARTHUR: What do you mean?
GUARD #1: Well, this is a temperate zone.
ARTHUR: The swallow may fly south with the sun, or the housemartin or the plumber may seek warmer climes in winter, yet these are not strangers to our land!
GUARD #1: Are you suggesting coconuts migrate?
ARTHUR: Not at all! They could be carried!
GUARD #1: What? A swallow carryin' a coconut?
ARTHUR: It could grip it by the husk!
GUARD #1: 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!
ARTHUR: Well, it doesn't matter! Will you go and tell your master that Arthur from the court of Camelot is here?
GUARD #1: Listen, in order to maintain air-speed velocity, a swallow needs to beat its wings 43 times every second, right?
ARTHUR: Please!
GUARD #1: Am I right?
ARTHUR: I'm not interested!
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!
ARTHUR: Will you ask your master if he wants to join my court at Camelot?
GUARD #1: But then, of course, African swallows are non-migratory.
GUARD #2: Oh, yeah. So they couldn't bring a coconut back anyway.
[Arthur and Patsy leave while the two guards keep discussing how a coconut would end up in Europe.]