in Best Jokes Collection 25 Best Knock Knock Jokes that are Absolutely Hilarious 111.6k Views #16 Mustache who? – Knock knock.– Who’s there?– Mustache.– Mustache who?– Mustache you a question, but I’ll shave it for later Pages:Previous 12345678910111213141516171819202122232425Next See more Previous article The Tell-Tale Sign Next article Where’s My Tractor?