Knock, knock. Who's there? Carp. Carp who? Carp diem, it's time for more laughter!

Knock, knock. Who's there? Cargo. Cargo who? No, it's car goes beep beep!

Knock, knock. Who's there? Ya. Ya who? No thanks, I prefer my jokes on Bing!

Knock, knock. Who's there? Moon. Moon who? Moon'er or later, you'll get the punchline!

Knock, knock. Who's there? Omelette. Omelette who? Omelette-ing go past because I'm hilarious!

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

Knock, knock. Who's there? Cargo. Cargo who? Cargo zoom zoom!

Knock, knock. Who's there? Olive. Olive who? Olive the jokes I'm telling today!

Knock, knock. Who's there? Voodoo. Voodoo who? Voodoo you think you are to interrupt my joke?

Knock, knock. Who's there? Curtis. Curtis who? Curtis the right time for some laughs!

Knock, knock. Who's there? Justin. Justin who? Just in time to make you smile!

Knock, knock. Who's there? Larry. Larry who? Larry 'bout to tell you another joke!

Knock, knock. Who's there? Boo. Boo who? Why are you crying, it's just a harmless joke!

Knock, knock. Who's there? Atch. Atch who? Bless you, you must be allergic to bad jokes!

Knock, knock. Who's there? Perry. Perry who? Perry glad you answered the door, it's joke time!

Knock, knock. Who's there? Olive. Olive who? Olive my jokes are knee-slapping good!

Knock, knock. Who's there? Robin. Robin who? Robin you, give me all your candy!

Knock, knock. Who's there? Boo. Boo who? Boo who? Don't cry, just laugh at my joke!

Knock, knock. Who's there? Lou. Lou who? Lou haven't heard this one before!

Knock, knock. Who's there? Yodelay. Yodelay who? Yodelay-hee-hoo, it's joke time!

Knock, knock. Who's there? Cash. Cash who? No thanks, I prefer direct deposit!