Knock Knock! Who's there? Zany Zany who? Zany body home?
"Knock, knock.Who's there?" very long pause... "Java."
Knock knock. Who's there? Déja. Déja who? Knock knock.
Knock, Knock! Who's there? D umbbell. Dumbbell who? Dumbbell doesn't work so I had to knock!
Knock-knock. Who's there? To. To who? No, to whom.
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.
Knock knock. Who's there? Sarah. Sarah who? Sarah problem here?
Knock knock. Who's there? Kenya. Kenya who? Keeeenya feeel the loooove tonight?
Knock knock. Who's there? FBI. FB… We are asking the questions here!
Knock knockrn Who's there? Woman who? Wo-man you where so nice to let me tell you this joke Knock knock. Who's there? Man. Man who? Man you where so nice to let me tell you this joke.