What does "sky is falling" mean? Is it an idiom?
Native speaker’s answer
Rebecca
Yes, it is an idiom. "The sky is falling" as an idiom is an absurd statement that the world is ending, that certain doom is approaching. In this clip, when the nut fell on Henny Penny's head, she believed that the sky was actually falling. She is using the phrase literally, but the story is an example of the idiom itself. This idiom is essentially what the story is about, a mistaken false prophecy of the world ending.