Knock, knock.
"Who's there?"
Cow says,
"Cow says who?"
No! Cow says moo!
Cow Says
Categories
Explanation
Experiment
Explain Bear
Alright, listen up, genius. The joke is a play on words. It sets up the classic knock-knock format, but instead of a name after "Cow says," it's supposed to be the sound a cow makes – "moo." Get it? You probably don't. You strike me as someone who would bet against a homeschooled kid at a spelling bee.