Knock, Knock! Who's there? Doctor Doctor who? That's a great TV show, isn't it?
A man and a woman were on a nude beach when a wasp flew into the woman's vagina. In a rush the guy pulled on his shorts, wrapped a towel around the woman, and ran to the hospital. When they got there the doctor said, "The only way I can think to get the wasp out is to slather some honey on my penis and lure it out." The doctor then offered his services for a mere $50. After a long pause, the couple agreed. The doctor happily slathered on some honey and went in. After a couple of thrusts the husband said, "Hey, what the hell is going on?" The doctor says, "Change of plans I'm going to drown the bastard."
Forget that! Playing doctor is for kids! Let's play gynecologist.
Peter approaches the gates of Heaven. "Knock knock," says Peter. Miraculously, someone answers him. "Who's there," a voice in the distance asked. "God," says Peter. "God who," asked the voice? "GOD DAMMIT open these gates! I've been a good neighbor, loved my wife and lost my virginity, twice!"
Knock,Knock, Who is there? Pen! Pen who? is...
A doctor and a lawyer were attending a cocktail party when the doctor was approached by a man who asked advice on how to handle his ulcer. The doctor mumbled some medical advice, then turned to the lawyer and asked, "How do you handle the situation when you are asked for advice during a social function?" "Just send an account for such advice" replied the lawyer. On the next morning the doctor arrived at his surgery and issued the ulcer-stricken man a $50 account. That afternoon he received a $100 account from the lawyer.
Knock knock. Who's there? Déja. Déja who? Knock knock.
Chuck Norris was once part of a knock knock joke. The Joke ended abruptly when after the first knock the door blew up killing the man behind it.
A Grandmother was checking out her grand-daughters grasp of colours and tested her regularly. She would ask her and the grand-daughter would always get the colour right. One day as we were heading to the doctors she turned to her Grandma and said "Don’t you think it’s time you tried to figure some of these out for yourself?"
Patient: "Doctor, I feel there are two of me." Doctor: "Very well, I shall see you, one at a time."
A desperate man goes to the doctor because he can't get a hard-on. He says " Doc I can't live without sex, I need the use of my equipment back!! " The Doc says " There is an experimental procedure where the mucles of a baby elephants' trunk are removed and implanted in your penis, this gives you the full use of your penis." Great I'll do it. Some time after the procedure, the man is at dinner with his date. He feels a rustle in his pants. So he just ignored it. It happens again. So he figured it just needed some air. So he unzips his pants to let it out. The problem seemed to go away until his penis reached up onto the table, grabbed a roll and disapeared back under the table. His date stared in complete awe and said " Can you do that again". He said " Probally but I don't think I could fit another roll up my ass."