Knock, knock. Who's there? Harry. Harry who? Harry the mosquito?

Knock, knock. Who's there? Owl. Owl who? Yes, owls do!

Knock, knock. Who's there? Sally. Sally who? Sally down, it's dangerous here!

Knock, knock. Who's there? Teddy. Teddy who? Teddy bear, you're so cute!

Knock, knock. Who's there? Pat. Pat who? Pat on the back for telling great jokes!

Knock, knock. Who's there? Art. Art who? Art you glad I came over?

Knock, knock. Who's there? Boone. Boone who? Boone again, it's me!

Knock, knock. Who's there? Carrie. Carrie who? Carrie on, I have more jokes!

Knock, knock. Who's there? Coal. Coal who? Coal outside, let me in!

Knock, knock. Who's there? Nobel. Nobel who? Nobel prize for whoever can guess this knock-knock joke!

Knock, knock. Who's there? Isabel. Isabel who? Isabel necessary to answer every knock-knock joke?

Knock, knock. Who's there? Otto. Otto who? Otto know, why don't you tell me a joke?

Knock, knock. Who's there? Al. Al who? Al give you a kiss if you open the door!

Knock, knock. Who's there? Olive. Olive who? Olive a sudden, I have the urge to knock on doors!

Knock, knock. Who's there? Amos. Amos who? Amos-quito just bit me outside your door!

Knock, knock. Who's there? Cook. Cook who? Cook the door, I'm here to see you!

Knock, knock. Who's there? Snow. Snow who? Snow way you're getting in without a jacket!

Knock, knock. Who's there? Conductor. Conductor who? Conductor this train of jokes!

Knock, knock. Who's there? Olive. Olive who? Olive me wants to tell you jokes!

Knock, knock. Who's there? Tank. Tank who? You're welcome for opening the door!

Knock, knock. Who's there? Smell mop. Smell mop who? Eww, that's gross!