water, a wall and 3 guys

3 guys were walking on the beach, George Bush, Osama Bin Laden,
and this random guy. All of a sudden this geenie pops up and
says, "I'll give you each 1 wish." So the random guy went first,
"I wish I was the richest guy on earth." OK, done," says the
geenie. Then Osama Bin Laden went, "I wish that I had this very
big wall around my country," "OK, done, says the geenie." Now
for George Bush."So tell me about this wall," says George.
"Well, it's 500 feet tall and 500 feet wide." says the geenie.
"OK, fill it up with water."