"Two Pints" joke

Two smart fellows were in a pub. They called the pubs owner over and asked him to settle an argument.

' Are there two pints in a quart or four?", asked one.

"There be two pints in a quart, confirmed the owner.

They moved back along the bar and soon the barmaid asked for their order.

"Two pints please, miss, and they are on the house."

The barmaid doubted that her boss would be so generous so one of the fellows called out to the owner at the other end of the bar, "You did say two pints, didn't you?"

"That's right," he called back, "Two pints."