A doctor and a lawyer were talking at a party. However, their conversation was constantly interrupted by people describing their ailments and asking the doctor for free medical advice.
After an hour of this, the exasperated doctor asked the lawyer, “What do you do to stop people from asking you for legal advice when you’re out of the office?”
“I give it to them,” replied the lawyer. “And then I send them a bill.”
The doctor was taken aback, but decided to give it a try. The next day, still feeling slightly guilty, the doctor prepared the bills.
As he went to give them to his secretary to send, she handed him a bill from the lawyer.