A Russian, a German, and a Pole meet on the 20th floor of a high-rise building, and decide to have a competition. Each one of them has to throw his watch out of the window, run down the stairs, and catch it before it falls on the ground. The Russian throws his watch, but before he gets downstairs, the watch is in pieces on the ground. Then the German throws his watch, and this also ends up in bits. Then it's the Pole’s turn. He calmly goes downstairs, dropping into the cafeteria on the eighth floor. After his coffee, he walks out of the front door, waits a minute and catches his watch. ‘How did you manage to do taht?’ ask the Russian and the German. ‘Easy!’ replies the Pole, ‘I just put my watch back two hours.’