Knock, knock. Who's there? Otto. Otto who? Otto know how long I've been knocking?

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

Knock, knock. Who's there? Henrietta. Henrietta who? Henrietta table, come have a seat!

Knock, knock. Who's there? Ivana. Ivana who? Ivana stay here all day telling jokes!

Knock, knock. Who's there? Alma. Alma who? Alma enough for both of us!

Knock, knock. Who's there? Boozy. Boozy who? Boozy-who, I'm drunk!

Knock, knock. Who's there? Wanda. Wanda who? Wanda hang out with me tonight?

Knock, knock. Who's there? Goliath. Goliath who? Goliath darn it, just open the door!

Knock, knock. Who's there? Felix. Felix who? Felix my drink, please!

Knock, knock. Who's there? Hip. Hip who? Hip hip hooray, it's joke time!

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

Knock, knock. Who's there? Canoe. Canoe who? Canoe believe another knock-knock joke?

Knock, knock. Who's there? Lettuce. Lettuce who? Lettuce party all night long!

Knock, knock. Who's there? Cash. Cash who? Cash me if you can!

Knock, knock. Who's there? Orange. Orange who? Orange you glad we're telling jokes?

Knock, knock. Who's there? Cabbage. Cabbage who? Cabbage patch doll here!

Knock, knock. Who's there? Boo. Boo who? Boo-hoo, I'm out of knock-knock jokes!

Knock, knock. Who's there? Lettuce. Lettuce who? Lettuce have a good time telling jokes!

Knock, knock. Who's there? Olive. Olive who? Olive a good joke like this one!

Knock, knock. Who's there? Goliath. Goliath who? Goliath down, you look tired!

Knock, knock. Who's there? Nobel. Nobel who? Nobel prize for great knock-knock jokes!