Knock knock. Who's there? Taco.

Taco who? Taco 'bout a great day to see you!

Knock knock. Who's there? Sew

Sew who? Sew glad you asked, it's a tailor-made joke!

Knock knock. Who's there? Flour.

Flour who? I knead to talk to you.

Knock knock. Who's there? Hearse.

Hearse who? Hearse a real groaner for ya: I used to be a baker, but I couldn't make enough dough to roll with the big timers!