Knock knock. Who's there? Sewers.

Sewers who? Sewers *nice* of you to ask, but these puns are really *sewers*-ing my patience, making me think it *sewers*ly time to *sewers*-t out a new joke writer!

Knock knock. Who's there? Wu

Wu who? Wu don't know, I'm having an identity crisis

Knock knock. Who's there? Honey.

Honey who? Honey, I'm home!

Knock knock. Who's there? Sew

Sew who? Sew long, I've been trying to stitch together a decent joke.