"Procedures and Ways ("Krama saha Vidi")" joke

A couple, aged 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 had
finished, the doctor said, "there is nothing wrong with the way you have
intercourse." And he charged them $10. 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 exactly what 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. Holiday Inn charges $28; Hilton Hotel charges $37. We do it here
for $10 and I get $8 back from Medicare for a visit to the doctor's office.