An older gentleman had an appointment to see the urologist who shared an office with several other doctors.
The waiting room was filled with patients. As he
approached the receptionist desk he noticed that
the receptionist was a large unfriendly woman who
looked like a Sumo wrestler. He gave her his name.
In a very loud voice, the receptionist said,
"YES, I HAVE YOUR NAME HERE; YOU WANT
TO SEE THE DOCTOR ABOUT IMPOTENCE, RIGHT?"
All the patients in the waiting room snapped their
heads around to look at the very embarrassed man.
He recovered quickly, and in an equally loud voice replied,
"NO, I'VE COME TO INQUIRE ABOUT A SEX CHANGE
OPERATION, BUT I DON'T WANT THE  
SAME DOCTOR THAT DID YOURS."