A middle-aged lawyer and an attractive blonde woman are sitting next to each other on a long flight from New York to London. The blonde is trying to get a little sleep, while the lawyer is vainly attempting to impress the blonde with his wit and intelligence. The blonde ignores the lawyer until he suggests a little wager.
Lawyer: Would you like to play a game? I’ll first ask you a question. If you can’t answer it, using any means at your disposal, you give me $5. Then if I can’t answer one of your questions, I’ll give you $500.
Blonde: Sure, why not?
Lawyer: Great. What’s the circumference of the earth?
Blonde (after quietly handing him $5 from her purse): OK, my turn. What goes up a hill with three legs, and comes down the hill with four?
The lawyer is stumped. He starts jotting down ideas, searches the net via the plane’s in-seat phone, then finally calls up a few friends, all without any luck. After over an hour, he finally wakes up the blonde and hands her $500.
She thanks him for the money and closes her eyes, but the lawyer can’t contain himself: “Wait! You’ve gotta tell me, what was the answer???” Without a word, she reaches into her purse and hands him another $5, then lays down and falls back asleep.