A poor man entered a doctor’s consulting-room. He looked very unhappy.

“Doctor,” he said, “you must help me. I swallowed a penny about a month ago.”

“Good heavens, man!” said the doctor. “Why have you waited so long? Why don’t you come to me on the day you swallowed it?”

“To tell you the truth, Doctor,” the poor man replied, “I didn’t need the money so badly then.”