The guy who made the knock knock joke deserves a no-bell prize.
Knock it out, you poo-a-loo, go get your loo.
Why did Sally fall off the swing? Because she had no arms.
Knock, knock. "Who's there?" Not Sally.
Q: How do you make a 9/11 cocktail?
A: Light two Manhattans on fire and then knock them over.
Knock knock. Who's there? Ligma. Ligma who? LIGMA BALLS!
Knock knock! Who's there? Deja. Deja who? Knock knock!
Yo mama's so poor, I knocked on the front door of her house and realized I was already outside in her backyard!
How do you knock out 26 kids in one punch?
You give them a Sandy Hook.
Knock knock whos there your mother duh
Knock knock.
Who's there?
Theodore.
Theodore who?
Theodore is locked, that is why I knocked.
Knock knock.
Who's there?
Robin.
Robin who?
Robin you, that is who.
Knock knock.
Who's there?
Apaches.
Apaches who?
Apaches on your eye.
Knock knock.
Who's there?
Por que.
Por que who?
"That's all, folks," in the words of Por que Pig.
Knock, knock.
Who's there?
Esteban.
Esteban who?
If you do not open the door, Esteban you!
Knock knock.
Who's there?
Abajo.
Abajo who?
I have abajo of water with me.
Why did the chicken cross the road? To go to the bitch house Knock knock Who's there? The chicken
Knock knock.
Who's there?
9/11.
9/11 who?
You said that you would never forget!
Why were the Twin Towers knocked over? Chuck Norris was leaning on one of them.
Knock knock.
Who's there?
A murderer.
A murderer who--
Is cut off by being murdered.
Knock knock.
Who's there?
Depression medicine and therapy.
GO AWAY!