"A lawyer and a blonde are sitting..." joke

A lawyer and a blonde are sitting next to each other on a long flight from LA
to NY. The lawyer leans over to her and asks if she would like to play a fun
game. The blonde just wants to take a nap, so she politely declines and rolls
over to the window to catch a few winks.
The lawyer persists and explains that the game is really easy and a lot of
fun. He explains "I ask you a question, and if you don't know the answer, you
pay me $5, and visa-versa." Again, she politely declines and tries to get
some sleep.
The lawyer, now somewhat agitated, says, "Okay, if you don't know the answer
you pay me $5, and if I don't know the answer, I will pay you $50!" figuring
that since she is a blonde that he will easily win the match. This catches
the blonde's attention and, figuring that there will be no end to this
torment unless she plays, agrees to the game.
The lawyer asks the first question. "What's the distance from the earth to
the moon?" The blonde doesn't say a word, reaches in to her purse, pulls out
a five-dollar bill and hands it to the lawyer.
Now, it's the blonde's turn. She asks the lawyer: "What goes up a hill with
three legs, and comes down with four?" The lawyer looks at her with a puzzled
look. He takes out his laptop computer and searches all his references.
He taps into the Airphone with his modem and searches the Net and the Library
of Congress. Frustrated, he sends E-mails to all his coworkers and friends he
knows. All to no avail.
After over an hour, he wakes the blonde and hands her $50. The blonde
politely takes the $50 and turns away to get back to sleep. The lawyer, who
is more than a little miffed, wakes the blonde and asks, "Well, so what IS the
answer!" Without a word, the blonde reaches into her purse, hands the lawyer
$5, and goes back to sleep.