cry wolf
喊狼来了；夸大其词
口语·警告不要虚报或夸大
英文释义
to give a false alarm or exaggerate a situation, making it difficult for others to believe you in the future
例句
Don't cry wolf about the deadline again; no one will believe you this time.
典故来源
出自《伊索寓言》中牧羊童多次谎称狼来了，最终真狼来时无人相信的故事。