A man had a tapeworm and went to the doctor.

... to get it removed. The doctor said "I know exactly what to do, come back next week and bring me a lemon cookie and an apple." so the man did this. He gave the apple and the lemon cookie to the doctor and he told the man to drop his pants and bend over. First he shoved the apple up the man's bottom and then waited a minute. Then he shoved the lemon cookie up his butt and then told him he was finished but to come back next week with an apple and a lemon cookie. The man did this. Once again the doctor told him to drop his pants and bend over. He inserted an apple, waited a minute, inserted a lemon cookie and then informed the man that he was finished and to come back next week with an apple and a lemon cookie.
The man began looking noticeably frustrated.
The next week the man, reluctantly showed up with the apple and the lemon cookie and the doctor did the exact same thing and when he was finished the man said "Hold up, this treatment is NOT working, the tapeworm is still in there and if I can be perfectly honest, I am getting pretty fucking tired of shoving apples and lemon cookies up my ass!"
The doctor said "Not to worry, next week will be your final treatment, bring me an apple and a hammer." the man glared at him, obviously worried that he was going to shove that hammer up his ass.
The next week rolled around and the man did what he was told once again.
The doctor told him to drop his pants.
He inserted the apple.
waited a minute.
waited another minute.
during the third minute, the little tapework stuck his little head out of the man's butthole and said "Hey, where is my lemon cookie?" and before the worm could finish it's sentence proper, the doctor had smashed it's head in with the hammer.
The End.