It’s National Knock Knock Joke Day! As a rule, we don’t think knock knock jokes are very funny, but here’s the best one:
Walk up to someone and say, “Say ‘knock knock.'”
Person: “Knock knock.”
You: “Who’s there?”
Person: …..
Hilarious.
A Prairie Home Companion does a joke show every year and here are some knock knock jokes heard on the show.