Knock-Knock Who's there? Disguise! Disguise who? Disguise killing me with these knock-knock jokes! Anybody, anyplace, and anything becomes a punch line for knock-knock jokes: Knock Knock! Who's there? Heidi. Heidi who? Heidi claire, something smells delicious. Try it with Daniella. (Daniella so loud, I can hear you just fine.) Or, pizza: Knock knock! Who's there? Pizza. Pizza who? Pizza my coat is caught in your door. Soon you'll turn everybody and...