knock knock joke purgatory

at least five times a day, me and Dear Hubby are subjected to the SAME STALE KNOCK KNOCK JOKE Cboy picked up from an episode of Franklin:

Cboy: knock knock
us: Who's there?
Cboy:: Arch
us: Arch who?
Cboy:: guzundheit!! sounds like you're catching a cold
Us: hahahahaha *fake laughter* you're funny (mamaguying him)
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Jboy's version:

Jboy: knock knock
us: Who's there?
Jboy: Achoo
Us: Achoo who?
Jboy: Stebullbla bla ble uff ac cold hahahahahahahaha!
Us: hahahaha *fake laughter* that's funny Jboy
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Today's task: Go to library and pick up a knock knock joke book. These boys need new material!