A doctor and a lawyer were talking at a party.
As they were talking, they were interrupted by people describing their health problems and asking the doctor for medical advice.
After an hour of this, the doctgor asked the lawyer,”What do you do to stop people asking you for legal advice when you are out of office?”
The lawyer replied,”I give them the advice, and then the next day I send them a bill for the advice. They pay the bill, and never ask me for advice outside the office again.”
The doctor was surprised but decided to try it.
The next day while the doctor was preparing the new bills, the postman pushed a letter into his letter box. The doctor opened the enveloped and inside found a bill from the lawyer.