Two wise guys go into a country pub, they call the landlord over and ask him to settle an argument. "Are there two pints in a quart, or four?" asked one.
"There are two pints in a quart" confirmed the landlord.
They moved along the bar to where the barmaid was and she asked for their order. "Two pints please Miss, and they are on the house."
When the barmaid appeared to doubt her boss would dispense free beer, one of the lads called out to the landlord at the other end of the bar: "You did say two pints, didn't you?"
"That's right," called the landlord, "Two pints."