A Doctor and a Lawyer...

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 u 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 shocked,but agreed to give it a try.The next day, still feeling slightly guilty, the doctor prepared the bills.When he went to place them in his mailbox, he found a bill from the lawyer.