信口胡说 Talk nonsense
Explanation
信口胡说指没有根据，不负责任地乱说。
信口胡说 means talking nonsense without any basis or responsibility.
Origin Story
从前，在一个小山村里，住着一位爱信口胡说的老奶奶。她常常在村口的大树下，对着路过的村民们，信口开河地讲述各种奇闻异事。比如，她会说自己曾经见过会飞的猪，还说村里的老黄牛会说人话。孩子们听得津津有味，大人们却早已习惯了她的胡言乱语，只是笑笑而过。一天，一位年轻的书生路过村口，老奶奶又开始她的信口胡说。书生起初听得饶有兴趣，但渐渐发现她说的许多事情都漏洞百出，根本经不起推敲。于是，书生耐心地向老奶奶解释了什么是真实，什么是虚构，并劝她以后不要再信口胡说了。老奶奶听后，羞愧地低下了头。从此以后，老奶奶改掉了信口胡说的坏毛病，开始认真地说话，村民们也都很高兴。
Once upon a time, in a small mountain village, there lived an old woman who loved to talk nonsense. She often sat under a big tree at the village entrance, telling all kinds of strange stories to the villagers passing by. For example, she would say that she had once seen a flying pig, and that the old yellow ox in the village could speak human language. The children listened with great interest, while the adults were already used to her rambling and just smiled. One day, a young scholar passed by the village entrance, and the old woman started her nonsense again. The scholar was initially amused, but gradually realized that many of her stories were full of holes and could not stand scrutiny. So, the scholar patiently explained to the old woman the difference between truth and fiction, and advised her not to talk nonsense anymore. After listening, the old woman hung her head in shame. From then on, the old woman changed her bad habit of talking nonsense and started to speak seriously, and the villagers were all very happy.
Usage
用于批评别人说话不负责任，随意乱说。
Used to criticize others for speaking irresponsibly and randomly.
Examples
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他信口胡说，根本不顾及别人的感受。
ta xinkouhushuō, gēnběn bùgùjí biérén de gǎnshòu.
He talks nonsense without considering other people's feelings.
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不要信口胡说，这样会伤害到别人。
búyào xìnkǒuhúshuō, zhèyàng huì shānghài dào biérén.
Don't talk nonsense, it will hurt others.