Here are the silliest and most ridiculous knock-knock jokes that will have you and your friends groaning or busting a gut with laughter: Knock, knock Who's there? Tank Tank who? You're welcome! Knock, knock Who's there? Dwayne Dwayne who? Dwayne the bathtub, I'm dwowning! Knock, knock Who's there? Amish Amish who? Awe, I miss you, too. Knock, knock Who's there? Gorilla Gorilla who? Gorilla me a hamburger! An sooooo... many more!