The patient told the doctor:
“Whenever I have headache
I take one aspirin. When I have
Cold, I go to bed and drink
Fruit juices. For stomach ache,
I take bicarbonate of soda.
Now, tell me doctor have I
Been doing the right things?”
Doctor replied “You certainly
Have. Pay my fee, five dollars.”
 
http://kvakutty.sulekha.com/blog/post/2008/09/consulting-fees-humor.htm