A guy has sex with a Chinese prostitute and a week later he goes to a doctor because his pecker has turned yellow, purple and green. The doctor takes a look and says, "Well, it's pretty bad, we are going to have to amputate!"
"No way!" says the guy and runs out of the hospital quick. He then thinks to himself, Chinese whore, then it's a Chinese doctor I need.
So he goes into Chinatown and finds a doctor. The doctor takes a look. The guy says, "Listen Doc, the previous Doctor said that he would have to amputate, was he right?"
"No, No, No," said the Chinese Doctor, "American Doctor's always want to cut, cut , cut. Two to three days at the most - pecker should fall off all by itself!