Best Knock-knock Jokes Ever

Knock, knock. Who's there? Figs. Figs who? Figs the doorbell; it's broken.
 
Who's that knocking on your door? You better make sure it's not another one of those silly jokes!
 
Orange you going to answer the door? Lettuce in; it's cold! Stopwatch you're doing and open the door! Isma lunch ready yet? ...