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

Knock, knock. Who's there? Boo. Boo who? Boo lover!

Knock, knock. Who's there? Ya. Ya who? Nope, still not Yahoo!

Knock, knock. Who's there? Lettuce. Lettuce who? Lettuce out, it's getting stuffy in here!

Knock, knock. Who's there? Octavia. Octavia who? Octavia great weekend ahead!

Knock, knock. Who's there? Banana. Banana who? Knock, knock. Who's there? Lettuce. Lettuce who? Lettuce in, it's too hot outside!

Knock, knock. Who's there? Olive. Olive who? Olive your jokes are starting to grow on me!

Knock, knock. Who's there? Lettuce. Lettuce who? Lettuce in, it's starting to snow out here!

Knock, knock. Who's there? Butter. Butter who? Butter let me in, I'm shivering!

Knock, knock. Who's there? Wanda. Wanda who? Wanda come over and tell more jokes?

Knock, knock. Who's there? Tank. Tank who? Tank you, I appreciate your humor!

Knock, knock. Who's there? Boo. Boo who? Don't be sad, just a joke!

Knock, knock. Who's there? Butter. Butter who? Butter open the door, I can't reach the bell!

Knock, knock. Who's there? Tank. Tank who? You're welcome, so glad to see you!

Knock, knock. Who's there? Wanda. Wanda who? Wanda hear another knock-knock joke?

Knock, knock. Who's there? Butter. Butter who? Butter open the door, I'm ready to laugh!

Knock, knock. Who's there? Boo. Boo who? Boo who who? Just me again!

Knock, knock. Who's there? Doctor. Doctor who? Exactly! Doctor Who, that's who!

Knock, knock. Who's there? Cash. Cash who? No cash, just jokes!

Knock, knock. Who's there? Dewey. Dewey who? Dewey know I love knock-knock jokes?

Knock, knock. Who's there? Boo. Boo who? Well, don't boo-hoo, it's just me!