What goes up a hill with three legs and comes down with four?

An American lawyer and a Nigerian are sitting next to each other on a long flight. The lawyer believes that Nigerians are so dumb that he could put something over on them easily...So the lawyer 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 lawyer 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, he says. This catches the Nigerian's attention and to keep the lawyer quiet, he agrees to play the game.
The lawyer 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 lawyer.
Now, it's the Nigerian's turn. He asks the lawyer, 'What goes up a hill with three legs, and comes down with four?' The lawyer uses his laptop and searches all references he could find on the Net. 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 and goes right back to sleep.
The lawyer 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 lawyer $5 and goes back to sleep. 
Joint Account 
A Rasta man goes to the bank with a 25 kg bag of marijuana and hands it
over to the cashier...shocked, the cashier asks.."Whats this for?"...the
Rasta man replies..."Me here to open a joint account"...
The Smuggler
Joseph comes up to the Cotonou border on his bicycle. He's got two large
bags over his shoulders.
The Customs official stops him and says, "What's in the bags?"
"Garri," answered Joseph.
The Customs official says, "We'll just see about that get off the bike."
The Customs official takes the bags and rips them apart; he empties them
out and finds nothing in them but garri.
He detains Joseph overnight and has the garri analyzed, only to discover
that there is nothing but pure garri in the bags.
The Customs official releases Joseph, puts the garri into new bags,
hefts them onto the man's shoulders, and lets him cross the border.
A week later, the same thing happens. The Customs Official asks, "What
have you got?"
"garri," says Joseph.
The Customs official does his thorough examination and discovers that
the bags contain nothing but garri. He gives the garri back to Joseph,
and Joseph crosses the border on his bicycle.
This sequence of events if repeated every day for three years.
Finally, Joseph doesn't show up one day and the Customs official meets
him in a beer parlour in Cotonou.
"Hey, my friend," says the Customs official, "I know you are smuggling
something. It's driving me crazy. It's all I think about.....
I can't sleep. Just between you and me, what are you smuggling?"
Joseph sips his beer and says, "Bicycles." 
The innocents
One day, Jimmy Jones was walking down
Main Street
when he saw his buddy Bubba driving a brand new pickup.
Bubba pulled up to him with a wide grin.
'Bubba, where'd you git that truck?!?'
'Tammie give it to me,' Bubba replied.
'She give it to ya?
I know'd she wuz kinda sweet on ya, but a new truck?'
'Well, Jimmy Jones, let me tell you what happened.
We wuz drivin' out on County Road 6, in the middle of nowheres.
Tammie pulled off the road, put the truck in 4-wheel drive, and headed into the woods. She parked the truck, got out, threw off all her clothes and said,
'Bubba, take whatever you want.'
So I took the truck! '
'Bubba, yore a smart man! Them clothes woulda never fit you!'