A doctor and a lawyer were talking at a party. 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 youre 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.

But, when he went to place them in his mailbox, all he found was a bill from the lawyer.