Two members of a country club, one a doctor, the other a lawyer, were having dinner in the lounge overlooking the golf course.
Midway through the meal, a lady who was a patient of the doctor, left her table and came over to the doctor.
“I’m sorry to interrupt your dinner, Doctor,” said the woman, “but I’ve had a terrible headache all day.”
“Well,” said the doctor, “I can’t really say what the problem is offhand, but you should go home, take a couple of aspirin, and go to bed. If it isn’t gone in the morning, call my office for an appointment.”
The woman thanked him and went back to her table. The doctor turned to his friend, the lawyer, and said, “Do you think I should send her a bill?”
“No,” said the lawyer.
The next day, a courier brought a bill to the doctor from the lawyer.