Claim: There are no funny knock-knock jokes

Then why are knock-knock jokes always amongst the first jokes we teach kids? The topic of this weekend's Comedist sermon.

If you care to try to prove me wrong, give it your best knock.

For an introduction to Comedism, the new religion; passages from The Comedist Manifesto, our holy book; Comedist support for evolution and gay marriage; how Comedism was founded; and a note on the War on Comedy, see these links.