Knock, knock. Who's there? Cow. Cow who? Cowmoo-flage!

Knock, knock. Who's there? Kenya. Kenya who? Kenya please tell me another joke?

Knock, knock. Who's there? Boo. Boo who? Boo you glad to see me?

Knock, knock. Who's there? Boo. Boo who? Boo you think you are?

Knock, knock. Who's there? Noah. Noah who? Noah good joke around here?

Knock, knock. Who's there? Lettuce. Lettuce who? Lettuce make some noise!

Knock, knock. Who's there? Cargo. Cargo who? Cargo beep beep, get out of my way!

Knock, knock. Who's there? Atch. Atch who? Atch yourself, before you wreck yourself!

Knock, knock. Who's there? Robin. Robin who? Robin you! Hand over your valuables!

Knock, knock. Who's there? Riddle. Riddle who? Riddle me this, Batman!

Knock, knock. Who's there? Toilet paper. Toilet paper who? Toilet paper that's running out!

Knock, knock. Who's there? Cereal. Cereal who? Cereal pleasure to see you!

Knock, knock. Who's there? An interrupting cow. An interrupting cow wh- MOOO!

Knock, knock. Who's there? Butter. Butter who? Butter open up, It's freezing out here!

Knock, knock. Who's there? Imma. Imma who? Imma gonna knock your socks off with this joke!

Knock, knock. Who's there? Boo. Boo who? Boo who? Are you crying, or just playing along with the joke?

Knock, knock. Who's there? Cow says. Cow says who? Cow says moooooove over, I want to come in!

Knock, knock. Who's there? Orange. Orange who? Orange you glad I'm at your door with a joke?

Knock, knock. Who's there? Olive. Olive who? Olive the jokes are hilarious today!

Knock, knock. Who's there? Boats. Boats who? Boats time for more knock-knock jokes!

Knock, knock. Who's there? Amish. Amish who? Awwww How sweet you are!