In a clinic, a patient who had a bad injury in his left leg asked the surgeon to do an operation on it. “How much will you charge me?” asked the patient. “One hundred dollars, ” answered the surgeon.Then the patient gave him two hundred dollars and said: “I'd like you to give me a better treatment.” But when the operation finished, the patient found both his two legs were operated. “Why did you have my right leg operated too?” asked the patient. “If I don't do that, I'll be guilty to another one hundreddollars,” answered the surgeon.