A young executive and an elderly man are sitting next to each other on a long flight. The executive thinks that old people are dumb and that he could get easily fool this one.
So the executive asks the elderly man if would like to play a fun game. The man is tired and just wants to take a nap, so he politely declines and tries to catch a few winks.
The young executive persists, saying that the game is a lot of fun. 'I ask you a question, and if you don't know the answer, you pay me only $5; you ask me one, and if I don't know the answer, I will pay you $500.'
This catches the elderly man's attention and to keep the young executive quiet, he agrees to play the game.
The executive asks the first question. 'What's the distance from the Earth to the moon?' The elderly man doesn't say a word, but reaches into his pocket, pulls out a five-dollar bill, and hands it to the young executive.
Now, it's the elderly man's turn. He asks the executive, 'What goes up a hill with three legs, and comes down with four?'
The executive uses his laptop to search all possible references, which is extensive, considering his profession. After an hour of searching he finally gives up. He wakes up the elderly man and hands him $500. The man pockets the $500 and goes right back to sleep.
The young executive is terribly frustrated because he still doesn’t know the answer. So he wakes the elderly man and asks, 'Well, so what goes up a hill with three legs and comes down with four?'
The elderly man reaches into his pocket, hands the lawyer $5 and goes back to sleep.
Don't mess with old folks.