Joke Of The Day: Nigerians are the wisest on Earth.. Read this to confirm

An American and a Nigerian are
sitting next to each other on a long flight.
The American is thinking that Nigerians are
so dumb that he can fool them easy. . .
So he asks if the
Nigerian would like to play a fun game.
The Nigerian is tired and just wants to take a
nap, so he politely declines and tries to
catch a few winks. The American persists
and says 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 Nigerian's attention and to
keep the
American quiet, he agrees to play
the game.
The American asks the first question.
'What's the distance from The Earth to the
moon?'
The Nigerian doesn't say a word, reaches in
his pocket pulls
out a five-dollar bill, and hands it
to the American.
Now, it's the Nigerian's turn.
He asks the American, 'What goes up a hill
with three legs, and
comes down with four?'
The American uses his laptop, searches all
the references he
knows. He uses the air-phone; he
searches the Net and even the Library of
Congress.
He sends e-mails to all the smart friends he
knows, all to no avail.
After one hour of searching, he finally gives
up.
He wakes up the Nigerian and
hands him $500.
The Nigerian pockets the $500 goes right
back to sleep.
The American is going nuts not knowing the
answer.
He wakes the Nigerian up and
asks, 'Well, so what goes up a hill with three
legs and comes down with four?'
The Nigerian reaches in his pocket, hands
the American $5 and
goes back to sleep.