POPSUGAR Love Knock-Knock Joke Time For A Knock-Knock Joke! by GiggleSugar 3/16/07 0 Shares Like us on Facebook Cow: Knock-Knock. Screaming Senorita: Who's there? Cow: A cow. Screaming Senorita: A cow who? Cow: A cow that wants you to mooooove out of the doorway. What were you raised in, a barn? Read More Knock-Knock JokeCowAnimal HumorVideo HumorHumor Get inspired with our daily newsletter Tech Love and Sex Food Home DIY Vegetarian Sign up with By signing up, I agree to the Terms and to receive emails from POPSUGAR.