A man visits his doctor and says "promise me you wont laugh, but I have this problem...?"

The Doc says "I can assure you I am a serious professional and I will not laugh."

So the man drops his trousers and reveals he has a wlly so small it could be a matchstick!

The Doc laughs and laughs he just can't contain his laughter! And then he calms himself down and says "I am truly sorry.... I promise I will not laugh again, now what is the problem?"

The man says ................................

"It's swollen!"