Jane laughs at a joke once when you tell it.
Fred laughs at a joke twice. Once when you tell it and once with you explain it to him.
Susie laughs at a joke three times. Once when you tell it, once when you explain it to her, and once when she understands it.
Mark laughs at a joke twice. Once when you tell it and once when you explain it to him. He never understands it.
Will laughs at a joke once when you tell it. There's no use trying to explain it to him.
A man and his wife were having some problems at home and were giving each other the silent treatment.
Suddenly, the man realized that the next day, he would need his wife to wake him at 5:00 AM for an early morning business flight. Not wanting to be the first to break the silence (and LOSE), he wrote on a piece of paper, "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 to go and see why his wife didn't wake him up, when he noticed a piece of paper by the bed. The paper said, "It is 5:00 AM. Wake up."