Knock, knock. Who's there? Tank. Tank who? Tank goodness you're here!

Knock, knock. Who's there? Pizza. Pizza who? Pizza ready for more jokes!

Knock, knock. Who’s there? Harry. Harry who? Harry up, it’s time to go!

Knock, knock. Who’s there? Alma. Alma who? Alma gonna knock your socks off with this joke!

Knock, knock. Who’s there? Sherwood. Sherwood who? Sherwood like to be a part of your joke!

Knock, knock. Who's there? Stopwatch. Stopwatch who? Stopwatch you're doing and pay attention!

Knock, knock. Who's there? Olive. Olive who? Olive me and I'll olive you!

Knock, knock. Who's there? Pizza. Pizza who? Pizza nice person to open the door!

Knock, knock. Who's there? Cargo. Cargo who? No, car don't go vroom, that's just the engine!

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

Knock, knock. Who's there? Cash. Cash who? Cash me outside, how 'bout that!

Knock, knock. Who's there? Lettuce. Lettuce who? Lettuce in and we'll have a good laugh together!

Knock, knock. Who's there? Hike. Hike who? Hi, want to go on a hike with me?

Knock, knock. Who's there? Yogurt. Yogurt who? Yogurt to know all jokes!

Knock, knock. Who's there? Marry. Marry who? Marry me into a fit of giggles!

Knock, knock. Who's there? Booze. Booze who? Booze time we told another joke!

Knock, knock. Who's there? Pan. Pan who? Pan-tastic, you opened the door!

Knock, knock. Who's there? Olive. Olive who? Olive you need is love and another joke!

Knock, knock. Who's there? Luke. Luke who? Luke out the window and you'll see who's knocking!

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

Knock, knock. Who's there? Etch. Etch who? Etch your arm, you're almost there!