Classic call-and-response style jokes that follow a set pattern.
Knock, knock. Who's there? Mikey. Mikey who? Mikey won't fit through this door, it's too small!
Knock, knock. Who's there? Lettuce. Lettuce who? Lettuce in, it's raining out here!
Knock, knock. Who's there? Cargo. Cargo who? No, car can't do that!
Knock, knock. Who's there? Boo. Boo who? Don't cry, I'm just a knock-knock joke!
Knock, knock. Who's there? Llama. Llama who? Llama stay outside if you don't let me in!
Knock, knock. Who's there? Noah. Noah who? Noah good place we can get some ice cream?
Knock, knock. Who's there? Olive. Olive who? Olive these jokes are getting out of hand!
Knock, knock. Who's there? Boo hoo. Boo hoo who? Hey, don't cry, it's just a joke!
Knock, knock. Who's there? Juan. Juan who? Juan to hear another knock-knock joke?
Knock, knock. Who's there? Toucan. Toucan who? Toucan play at that game!
Knock, knock. Who's there? Wanda. Wanda who? Wanda hang out and watch a movie?
Knock, knock. Who's there? Thistle. Thistle who? Thistle have to do until the real joke arrives!
Knock, knock. Who's there? Voodoo. Voodoo who? Voodoo you think you are, barging in here like that?
Knock, knock. Who's there? Echo. Echo who? Echo, echo, echo... Can you hear me now?
Knock, knock. Who's there? Henrietta. Henrietta who? Henrietta little too hard, the door just slammed in my face!
Knock, knock. Who's there? Olive. Olive who? Olive me wants to talk to you!
Knock, knock. Who's there? Dewey. Dewey who? Dewey have to use a key to get in?
Knock, knock. Who's there? Yodelay. Yodelay who? Yodelay-hee-hoo, open the door!
Knock, knock. Who's there? Boo. Boo who? Stop crying and open the door!
Knock, knock. Who's there? Honeydew. Honeydew who? Honeydew you wanna know who's at the door?
Knock, knock. Who's there? Police. Police who? Police open the door, it's freezing outside!