"Elderly loving" joke

A couple, age 67, went to the doctor's office. The doctor asked, "What can
I do for you?"
The man said, "Will you watch us have sexual intercourse?"
The doctor looked puzzled, but agreed. When the couple finished, the doctor
said, "There is nothing wrong with the way you have intercourse." And he
then charged them $32.00.
This happened several weeks in a row. The couple would make an appointment,
have intercourse, pay the doctor and leave.
Finally the doctor asked, "Just what exactly are you trying to find out?"
The old man said, "We're not trying to find out anything. She is married
and we can't go to her house. I am married and we can't go to my house.
The Holiday Inn charges $60.00 and the Hilton charges $75.00. if we do it here
for $32.00, I get back $28.00 from Medicare for a visit to the doctor's
office."