Picture if you will a hill. On the top of the hill is a house with a red light outside it. On one side of the hill is a man walking up the hill, the other side of the hill another man walking down the hill. Inside the house is a man and a woman on a bed. Observing all this from a helicopter hovering above is another man.

Question: What are the nationalities of the 4 men?

Answer: The man going down the hill - he's Finnish. The man going up the hill - he's Russian. The man in the bed - well, Himalayan and the man in the helicopter - he's Irish - he's waiting for the red light to turn green.