A man goes into the doctor and says, "Doctor, I've got this
problem you see, only you've got to promise not to laugh."
The doctor replies, "Of course I won't laugh, that would be
thoroughly unprofessional. In over twenty years of being a
doctor I have never laughed at a patient."

"OK then," says the man and he dropped his trousers. The doctor is greeted by the tiniest penis he has ever seen in his life.

Unable to control himself, he falls about the floor laughing
uncontrollably. About ten minutes later he is able to struggle to his feet and wipe the tears from his eyes.

"I'm so sorry," he says to the patient, "I don't know what
came over me. I won't let it happen again. Now what seems to be the problem?"

The man looks up at the doctor sadly and says, "It's swollen."