The best knock-knock jokes

Knock Knock! Who's there? Justin Justin who? Justin time for dinner!
Vote: has 64.79 % from 102 votes. Send joke:

More jokes about: kids, knock-knock
One day a man heard knocking at his door. He opened the door only to see a small snail sitting there smiling. The guy picked the snail up and threw it as far as he possibly could. Three years later he heard knocking at the door again. He opened the door to see the snail. The snail said, "What the hell was that all about?"
Vote: has 61.65 % from 145 votes. Send joke:

More jokes about: animal, knock-knock
Knock Knock. Who's there? Opportunity. Don't be silly - opportunity doesn't knock twice!
Vote: has 61.23 % from 132 votes. Send joke:

More jokes about: knock-knock, life
Knock Knock! Who's there? Zany Zany who? Zany body home?
Vote: has 59.87 % from 130 votes. Send joke:

More jokes about: kids, knock-knock
Knock knock. Who's there? Déja. Déja who? Knock knock.
Vote: has 59.80 % from 28 votes. Send joke:

More jokes about: knock-knock, life, memory
"Knock, knock.Who's there?" very long pause... "Java."
Vote: has 59.64 % from 167 votes. Send joke:

More jokes about: IT, knock-knock
Knock-knock. Who's there? To. To who? No, to whom.
Vote: has 58.81 % from 78 votes. Send joke:

More jokes about: knock-knock, nerd
Knock, Knock! Who's there? D umbbell. Dumbbell who? Dumbbell doesn't work so I had to knock!
Vote: has 56.78 % from 45 votes. Send joke:

More jokes about: 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.
Vote: has 54.77 % from 35 votes. Send joke:

More jokes about: Chuck Norris, death, knock-knock
Knock knock. Who's there? FBI. FB… We are asking the questions here!
Vote: has 54.66 % from 27 votes. Send joke:

More jokes about: communication, cop, knock-knock, mean