Top Ten Worst Knock Knock Jokes

Ever had somebody tell you one of these awful specimens and you want to punch them out so bad. You're just like me. The amount of ten year olds I want to punch for telling me jokes this bad...
The Top Ten
1 Knock Knock. Who's there? Olive. Olive who? Olive you.
2 Knock Knock. Who's there? Cows go. Cows go who? No silly, cows go moo.
3 Knock Knock. Who's there? Avon. Avon who? Avon a hug!
4 Knock Knock. Who's there? Doctor. Doctor who? You said it!
5 Knock Knock. Who's there? Hannah. Hannah who? Hannah partridge in a pear tree.
6 Knock Knock. Who's there? Toby Toby, who? Toby or not Toby, that is the question.
7 Knock Knock. Who's there? Abie Abie, who? ...Abie Cdefg.
8 Knock Knock. Who's there? Amos. Amos who? A mosquito.
9 Knock Knock. Who's there? Nanna. Nanna who? Nanna your business.
10 Knock Knock. Who's there? Little old lady Little old lady who? Wow I didn't know you could yodel!
The Contenders
11 Knock knock. Who's there? Banana. Banana who? (x Infinity) Knock knock. Who's there? Orange. Orange who? Orange you glad I didn't say banana?
12 Knock knock. Who's there? I am!

I've got something to add on to it:

Knock knock.
Who's there?
I am.
I am who?
YOU DON'T KNOW WHO YOU ARE? WHAT, DO YOU HAVE A CONCUSSION?

This is a spongebob reference

13 Knock knock. It's open. Come in!

The best way to kill a knock knock joke

14 Knock Knock. Who's there? It's me. I kill you!
15 Knock knock. Who's there? Abbey. Abbey who? Abbey birthday to you!
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