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? Tell me.

Tell me who? No, *you're* supposed to tell *me* who's there. I'm the one who knocked, and now I'm waiting.

Knock knock. Who's there? Kenya.

Kenya who? Kenya believe the sheer audacity of my wordplay? I'm talking *wildly* imaginative puns that will have you *roaring* with laughter, or perhaps just *zebra*-barrassed by my relentless dad jokes, because *Africa* some good ones up my sleeve!

Knock knock. Who's there? Cows go.

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