Knock Knock Jokes

Joke: Knock knock!
Who's there?
Repeat.
Repeat who?
Who who who who who, how long do I have to do this? Who who who...

Joke: Knock knock!
Who's there?
Myth!
Myth who?
Myth you too!

Joke: Knock knock!
Who's there?
I can say who!
I can say who who?
Do you always have to one up me?

Joke: Knock knock!
Who's there?
Ben.
Ben who?
Ben knocking for ten minutes!

Joke: Knock knock!
Who's there?
Juno!
Juno who?
Juno who it is!

Joke: Knock knock!
Who's there?
Hatch.
Hatch who?
Never mind, I don't want to get sick.

Joke: Knock knock!
Who's there?
Europe!
Europe who?
No! You're a poo!

Joke: Knock knock!
Who's there?
John Smith Alexander Thomas Eisenhower William Joesph Harvey Jr. the third!
...
That's what I thought.

Joke: Knock knock!
Who's there?
Knock.
Knock who?
Knock knock!
Who's there?
Knock.
Knock who?
(Keep this going as long as you possibly can.)