>3 Greeks and 3 Turks are travelling by Train to a conference. At the station, the 3 Turks each buy tickets and watch as the 3 Greeks buy only a single ticket.
>"How are 3 people going to travel on only one ticket?" asks one Turk.
>"Watch and you'll see," answers one Greek.
>They all board the Train. The Turks take their respective seats but all three Greeks cram into a restroom and close the door behind them. Shortly after the Train has departed, the conductor comes around collecting tickets. He knocks on the restroom 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 Turks saw this and agreed it was quite a clever idea. So after the conference, the Turks decide to copy the Greeks on the return trip and save some money (being clever with money, and all that). When they get to the station, they buy a single ticket for the return trip. To their astonishment, the Greeks don't buy a ticket at all.
>"How are you going to travel without a ticket?" says one perplexed Turk.
>"Watch and you'll see," answers a Greek.
>When they board the Train the 3 Turks cram into a restroom and the 3 Greeks cram into another one nearby. The Train departs. Shortly afterward, one of the Greeks leaves his restroom and walks over to the restroom where the Turks are hiding. He knocks on the door and says, "Ticket, please."