Monty Python's Flying Circus, Series 1

Police officer:
A blancmange, eh?

Woman:
That's right. I was just playing a game of doubles with Sandra, Jocasta, Alec and David, when...

Police Officer:
Hold on. That's five. Five people! How'd you play doubles with five people? Sounds a bit funny if you ask me, playing doubles with five people!

Woman:
Well, we often play like that. Jocasta plays on the side, receiving service. It helps to speed the game up and make it a lot faster, and Jocasta isn't left out.

Police Officer:
Look, are you asking me to believe that the five of you was playing doubles, while on the very next court there was a blancmange playing by itself?

Woman:
That's right.

Police Officer:
Well, answer me this, then: Why didn't Jocasta play the blancmange at singles, while you and Sandra and Alec and David played a proper game of doubles with four people?

Woman:
Because Jocasta always plays with us! She's a friend of ours!

Police Officer:
Call that friendship? Messing up a perfectly good game of doubles?

Woman:
It's not messing it up, officer! We like to play with five!

Police Officer:
Look, it's your affair if you want to play with five people, but don't go calling it doubles! At Wimbledon, if Fred Stolle and Tony Roche played Charlie Passarell and Cliff Drysdale and Peaches Bartkowicz, they woudn't go calling it doubles!

Woman:
Well, what about the blancmange?

Police Officer:
That could play Ann Haydon-Jones and her husband, Pip!