Henny Penny, more commonly known as Chicken Little and sometimes as Chicken Licken, is a folk tale with a moral in the form of a cumulative tale about a chicken who believes the world is coming to an end. The phrase The sky is falling! features prominently in the story, and has passed into the English language as a common idiom indicating a hysterical or mistaken belief that disaster is imminent. Versions of the story go back more than 25 centuries, and it continues to be referenced in a variety of media.