Nasreddin went into a bank that he did not usually use and asked to withdraw a large sum of money from his account. The bank clerk was naturally suspicious and asked him politely:

“Have you any means of identifying yourself?”

Nasreddin reached down into the pockets of his long cloak and found an ornate mirror. He held the mirror up and looked studiously into it and exclaimed to the clerk:

“Yes, that’s me all right.”