Small Change (S)

Herr Hoffman parks his late-model car in a lot across from his corner office on the top floor. Each day, he puts a coin in the cup of a beggar who stands in front of the building. One day, Hoffman looks out his window and notices the beggar washing his car - no one else's in the lot, just Hoffmann's. That evening, when he gives the beggar a coin, Hoffmann tells him not the wash it. But the next day, it happens again. On the third morning, Hoffman drives his car back and forth in a mud puddle; the beggar washes it carefully.