Contender for the world's worst joke:
A man goes to the doctor. The doctor asks him what his problem is.
Man: "I have twine coming out of my ass. I pulled, but I haven't been able to pull it all of the way out."
Doctor: "Drop trou, then bend over so I can see what seems to be the cause of the problem."
The man does that, and the doctor says: "Well, I'll be. You do have yards and yards of twine coming out of your ass. Let me see if I can take care of your problem."
So the doctor starts pulling on the twine, and after he pulls about 30 more yards of twine out, he can't pull any more out because of an obstruction.
Man: "Doctor, I can't take this any more. Please see if you can if you can pull whatever is at the end of the twine out."
The doctor gives a couple of good tugs before he suddenly pulls a bouquet of roses out of the man's ass.
Both men were astounded.
Man: "A bouquet of roses!?! Where in the world did those come from?"
Doctor: "I don't know. There was no card attached."