This is also a pea and not my story, but bears retelling
Dr When used to frequent comedy nights and one day after such a night regaled me with the following tale-

A stand-up comedian was working his way through his set while regularly being heckled by one reveller at the side of the audience. Bravely ignoring him for ten minutes, all of a sudden he broke off his current set-up and announced:

"Ladies and gentlemen- did you know that the average male genital comes in at about six inches long. While the average vagina is capable of accomadating 7 inches of penis. So, on average there's a spare inch of vagina per woman on this planet. If 50% of the 5 billion people on the planet are women then that must mean there's 2.5 billion inches, or around 46 thousand 300 miles of spare cunt in the world."

"And over there" he says, pointing to the heckler " is at least 5 foot 6 inches of it".

A burst of cheers followed by the bloke interjecting loudly 'I'm 5 foot 10 actually".

To which the stand up (who had planned the underestimate deliberately to solicit this riposte) replies "Well you're a bigger cunt than I thought then".

Thanks Dr W.
( Rotating Wobbly Hat That's not a banana. THIS is a banana., Fri 25 Nov 2011, 20:13, Reply)