The beggar

The handsome, well-dresses man handed the poor beggar a five dollar bill. 'Here, my good man,' he said, 'eat your fill and there's enough there for a drink or two.'
The beggar entered Tony's restaurant, where he ate the biggest dinner of his life and then topped it off with a bottle of wine and a big tip of Luigi, the waiter. 'Ah,' said the handsome, well-dressed stranger, 'it's a good word. Everyone is happy. The poor beggar because he is no longer hungry, Tony because he has made a big sale, the waiter because he has received a nice tip. And me?... happy too, because the bill was counterfeited.'