Knock knock. Who's there? Flour.

Flour who? I knead to talk to you.

Knock knock. Who's there? Isabelle.

Isabelle who? Isabelle necessary, or can I just walk right in?

Knock knock. Who's there? Egg

Egg who? Egg-cuse me, I'm cracking under the pressure to make a good pun.

Knock knock. Who's there? Sew

Sew who? Sew long, I've been trying to weave a good joke.