Crow mouth is used to describe what we usually say. Well, we not only talk fast, but also don't say a few words. If some people are particularly reticent, they always use words that are particularly frank, or to tell the truth, er, when it comes to other people's suffering or narrow-mindedness, we usually use the word "crow's mouth" to describe it. Because toothless, um, he is usually, um, somewhere. If there is a dead person or a particularly serious patient, the crow will feel the smell of death and will go to such a yard to bark, so it is generally considered very unlucky to ask the crow to go there. And if there is a particularly serious patient at home, if you don't put your face down, it is usually a message of death. Prove that this person is really hopeless, so if something unlucky happens to us at ordinary times, or someone, um, say it. When he said something unlucky, many people described him as a crow's mouth.