S1E110 - Kapow's Power of Invention: The Knock-Knock Joke

The Knock-Knock joke has been the king, or queen, of American humor since the early 20th century. That’s almost a hundred years that Knock-Knock jokes have been making people, and goats, of all ages all ages laugh out loud! And no matter how much people roll their eyes and sigh, the Knock-Knock joke keeps going, and evolving! Tune in today to find out how it was invented.