"Please wake me at 5:00 AM." He left it where he knew she would find it.
The next morning, the man woke up, only to discover it was 9:00 AM and he had missed his flight. Furious, he was about going to go and see why his wife hadn't wakened him, when he noticed a piece of paper by the bed.
The paper said, "It is 5:00 AM. Wake up".