"Knock! Knock! Who's there? Justin. Justin who? Justin the neighborhood and thought I'd come over." Reader's Digest has a long tradition of providing our readers with laughter through our many humor features. In The Little Book of Big Family Laughs we have compiled some of the funniest jokes, riddles, and one-liners that can be shared across generations, around the dinner table or the campfire. Truly, there's something for everyone from 9 to 99. We hope you and your family will take the time to read, share and laugh together. Did you hear that NASA has launched several cows into orbit? It was the herd shot around the world.