Jokes

Knock Knock! Who's there? Who. Who who? Are you an owl?

Knock Knock! Who's there? Doris. Doris who? Doris locked, that's why I'm knocking!

Knock, knock! Who's there? Spell. Spell who? W-H-O.

Knock Knock! Who's there? Tank. Tank who? You're welcome!

Knock, Knock! Who's there? Lettuce. Lettuce who? Lettuce in and we'll tell you!