Knock Knock,

Whose There?

Doris,

Doris who?

Doris is locked that's why I had to knock :D
Source(s):
http://www.knock-knock-joke.com/knock_knock_001.htm

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Knock. Knock.
Who's there?
Lettuce.
Lettuce who?
Lettuce in and you will find out.
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My 4 year old loves this one!

Knock. Knock.

Who's There?

Banana.

Banana who?

Knock. Knock.

Who's There?

Banana.

Banana who?

Knock. Knock.

Who's There?

Orange

Orange who?

Orange you glad I didn't say banana.

Here's a site with tons of knock knock jokes

http://www.knock-knock-joke.com/default.htm
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Sherwood.

Sherwood who?

Sherwood like to meet you!

Here is where you can find more!

http://www.scribd.com/doc/219465/Knock-Knock-Jokes
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person 1: Knock knock

person 2: Who's there?

person 1: Who's there?

person 2: Who's there who?

person 1: Who's there you!

person 2: No I'm not, you are.

person 1: darn it.

Find more Knock knock jokes, riddles, and brain teasers

http://www.azkidsnet.com/JSknockjoke.htm
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Knock Knock
.. who's that
........ wanna know come here
....... check who is this its s--t man........
....... oh yes just you looked at a mirror .........
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Knock Knock.
Who's there?
The police.
The police who?
No, I'm not kidding, it's the police.

Just kidding. Here is the real one that I want to answer with.

Knock Knock
Who's there?
Interrupting cow
Interrupt....
MOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO.
http://i168.photobucket.com/albums/u189/Ixoyankees213/knockknock.gif Yeay, I found a picture to go with my joke, well animation
Source(s):
Just stuff I remember.

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Knock Knock!
Who's there?
Amsterdam.
Amsterdam, who?
Amsterdam tired of all these stupid knock-knock jokes !!!
Source(s):
http://www.knock-knock-joke.com/knock_knock_015.htm

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knock knock
whos there
bend
bend who
bend me over and ill show you
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Knock, Knock!
Who's there?
Justin.
Justin who?
Justin case you forgot me out here.
Source(s):
http://www.best-knock-knock-jokes.com/

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