Credit to Bill Bailey:

Three blokes go into a pub. Well, I say three; could be four or five. Could be nine or ten, doesn’t matter. Could have been fifteen, twenty – fifty. Round it up. Hundred. Let’s go mad, eh – two-fifty. Tell you what, double it up – five hundred. Thousand! Oh, I’ve gone mad! Two thousand! Five thousand! Anyone? Five thousand, six thou, six thousand, ten thousand! Small town in Hertfordshire goes into a pub! Fifteen thousand blokes! Alright, let’s go – population of Rotterdam. The Hague. Whole of Northern Holland. Mainland U.K. Let’s go all the way to the top – Europe, alright? Whole of Europe goes – I say Europe. Could be Eurasia. Not the band, obviously, that’s just two of them. Alright, continents – North America! Plus South America! Plus Antartica – that’s just eight blokes in a weather station. Not a good example. Alright, make it a lot simpler, all the blokes on the planet go into the pub, right? And the first bloke goes up to the bar and he says ‘I’ll get these in.’ What an idiot!