Knock knock. Who's there? Noah.

Noah who? Noah body's home, I'm ark-ing around for someone to let me in.

Knock knock. Who's there? Lettuce.

Lettuce who? Lettuce in! It's getting so crisp out here, and frankly, I'm just romaine calm, but this wait is making me wilt!

Knock knock. Who's there? A question.

A question who? No, just 'A question.' You're supposed to ask *me* a question now.

Knock knock. Who's there? Cows go.

Cows go who? No, cows go 'moo'.