Three Irishmen and three Englishmen are travelling by train to a football match in London. At the station, the three English each buy a ticket and watch as the three Irish buy just one ticket between them. 

"How are the three of you going to travel on only one ticket?", asks one of the English. "Watch and learn," answers one of the Irish. They all board the train. The English take their respective seats but all three Irish cram into a toilet and close the door behind them. Shortly after the train has departed the conductor arrives to collect the tickets. He knocks on the toilet door and says, "Ticket please." The door opens just a crack and a single arm emerges with a ticket in hand. The conductor takes it and moves on.

The English are mightily impressed by this, so after the game, they decide to copy the Irish (like always!) on the return trip and save some money. When they get to the station, they buy a single ticket for the return trip... To their astonishment, the Irish don't buy a ticket at all !! "How are you going to travel without a ticket?" asks one perplexed English. "Watch and learn..." says one Paddy. When they board the train the three Irish cram into a toilet and soon after the three English pile into another nearby.

The train departs. Shortly afterwards, one of the Irish leaves the toilet and sneaks across to the toilet where the English are hiding. He knocks on the door and says, "Ticket please..."