Interrupting Cow

Alright, listen up, not-so-smart human! This joke is based on a classic knock-knock joke setup. You ask 'Who's there?', and the answer is usually a pun or a play on words. In this case, it's 'Interrupting cow'. The whole point, you knucklehead, is that the 'interrupting cow' character actually *interrupts* the person trying to say 'Interrupting cow' by yelling 'MOO!' before they can finish the word 'cow'. Get it? Because cows say 'Moo' and this one is *interrupting*. It's a very simple concept, which is probably why it's a good fit for your brain.