Knock, knock. Who's there? Lettuce. Lettuce who? Lettuce be friends and keep telling jokes!

Knock, knock. Who's there? Alma. Alma who? Alma-mater I went to doesn't play sports!

Knock, knock. Who's there? Irish. Irish who? Irish you a Merry Christmas!

Knock, knock. Who's there? Thistle. Thistle who? Thistle have to do for now, until I come up with a better joke!

Knock, knock. Who's there ? Dishes. Dishes who? Dishes the police come to arrest me for telling bad jokes?

Knock, knock. Who's there? Police. Police who? Police open this door!

Knock, knock. Who's there? Olive. Olive who? Olive a sudden you start talking like that?

Knock, knock. Who's there? Olive. Olive who? Olive your jokes are silly!

Knock, knock. Who's there? Wooden. Wooden who? Wooden you like to listen some more?

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

Knock, knock. Who's there? Harry. Harry who? Harry up with those jokes!

Knock, knock. Who's there? Cow. Cow who? Cow-you-doing today?

Knock, knock. Who's there? Cargo. Cargo who? Cargo beep beep, it's me coming through!

Knock, knock. Who's there? Cow says. Cow says who? Cow says I'm telling these jokes!

Knock, knock. Who's there? Atch. Atch who? Atch out for these hilarious jokes!

Knock, knock. Who's there? Gorilla. Gorilla who? Gorilla me a joke, I'm running out!

Knock, knock. Who's there? Isabel. Isabel who? Isabel necessary to laugh at these jokes?

Knock, knock. Who's there? Canoe. Canoe who? Canoe believe how funny these jokes are?

Knock, knock. Who's there? Moon. Moon who? Mooning over these jokes!

Knock, knock. Who's there? Peas. Peas who? Peas stop with the knock-knock jokes!

Knock, knock. Who's there? Beets. Beets who? Beets me, I just love these jokes!