One day, Dora's mother gave her a coin. It was a bit dirty, so Dora washed it. Then, the coin started talking to her.
The coin said: "When I was made, I was nice and clean. People took me to a bank, where I stayed for a few days. A bank teller then gave me to a shopkeeper. Your mother went to buy cake from his shop. He gave me to her as part of her change. She dropped me, but a street cleaner saw me, picked me up, and returned me to her. Finally, she gave me to you as pocket money. You washed me to make me clean again."