Knock, knock. Who's there? Justin. Justin who? Just in time to hear another funny joke!

Knock, knock. Who's there? Lettuce. Lettuce who? Lettuce find out who's there together!

Knock, knock. Who's there? Olive. Olive who? Olive a good joke, do you?

Knock, knock. Who's there? Wendy. Wendy who? Wendy we gonna get to the good jokes?

Knock, knock. Who's there? Snow. Snow who? Snow use in crying over spilled milk.

Knock, knock. Who's there? Omelette. Omelette who? Omelette smarter than you think!

Knock, knock. Who's there? Cows. Cows who? Cows go 'moo', silly!

Knock, knock. Who's there? Alpaca. Alpaca who? Alpaca the suitcase, I'm leaving!

Knock, knock. Who's there? Lettuce. Lettuce who? Lettuce in or we'll freeze out here!

Knock, knock. Who's there? Dewey. Dewey who? Dewey have to keep telling knock-knock jokes?

Knock, knock. Who's there? Europe. Europe who? No, you're a poo!

Knock, knock. Who's there? Howard. Howard who? Howard you like a big hug?

Knock, knock. Who's there? Boo. Boo who? Stop crying and answer the door!

Knock, knock. Who's there? Doughnut. Doughnut who? Doughnut forget to bring snacks!

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

Knock, knock. Who's there? Cow says. Cow says who? Cow says mooooo!

Knock, knock. Who's there? Lettuce. Lettuce who? Lettuce pray for more jokes!

Knock, knock. Who's there? Ice cream. Ice cream who? Ice cream to hear more jokes!

Knock, knock. Who's there? Olive. Olive who? Olive you!

Knock, knock. Who's there? Harry. Harry who? Harry up and tell me a joke!

Knock, knock. Who's there? Isabel. Isabel who? Isabel necessary for these knock-knock jokes!