An old guy had an appointment to see the urologist. As he approached the reception desk he saw that the woman there was large, unfriendly, and resembled a Sumo wrestler. He gave her his name.
"YES," in a very loud voice, "YOU WANT TO SEE THE DOCTOR ABOUT IMPOTENCE, RIGHT?"
All the patients in the waiting room snapped their heads around to look at the embarrassed man.
He recovered quickly, though, and in an equally loud voice, said: "NO, I'VE COME TO INQUIRE ABOUT A SEX CHANGE OPERATION. BUT I DON'T WANT THE SAME DOCTOR THAT DID YOURS."
Stolen from: Phil of Phils Phun