Knock, knock. Who's there? Tank. Tank who? You're welcome to come in!

Knock, knock. Who's there? Harry. Harry who? Hurry up and answer the door!

Knock, knock. Who's there? Lettuce. Lettuce who? Let us in, it's freezing out here!

Knock, knock. Who's there? Kenya. Kenya who? Kenya help me with my homework?

Knock, knock. Who's there? Iva. Iva who? I've a headache, can you make me laugh instead?

Knock, knock. Who's there? Otto. Otto who? Otto know what to say, so I'm telling a knock-knock joke!

Knock, knock. Who's there? Atch. Atch who? Bless you, you sneezed!

Knock, knock. Who's there? Boo. Boo who? It's okay, don't cry, it's just a joke!

Knock, knock. Who's there? Duck. Duck who? Duck behind the door, it's gonna swing open!

Knock, knock. Who's there? Olive. Olive who? Olive you and miss you all the time!

Knock, knock. Who's there? Toy. Toy who? Toy think you could let me in, please?

Knock, knock. Who's there? Alpaca. Alpaca who? Alpaca the suitcase, you drive!

Knock, knock. Who's there? Boo. Boo who? Just kidding, don’t cry!

Knock, knock. Who's there? Atch. Atch who? Atch out, here comes another joke!

Knock, knock. Who's there? Olive. Olive who? Olive you need to know is that these jokes are hilarious!

Knock, knock. Who's there? Honeydew. Honeydew who? Honeydew you expect me to remember all these jokes?

Knock, knock. Who's there? Control freak. Control freak who? Okay, you can say 'Control freak who?' now.

Knock, knock. Who's there? Zoom. Zoom who? Zoom did you expect, another joke?

Knock, knock. Who's there? Orange. Orange who? Orange you glad you stumbled upon these jokes?

Knock, knock. Who's there? Doughnut. Doughnut who? Doughnut forget to laugh at my jokes!

Knock, knock. Who's there? Cereal bowl. Cereal bowl who? Cereal bowl filled with laughs!