Learning English

Hi guys, I found an interesting thing about learning some English word expressions that people usually use. Here it is.

Words and Their Stories: Mouth Expressions

People use their mouths for many things. They eat, talk, shout and sing. They smile and they kiss. In the English language, there are many expressions using the word mouth. But some of them are not so nice.
The speaker might say: “I really put my foot in my mouth this time.” If this should happen, the speaker might feel down in the mouth. In other words, he might feel sad for saying the wrong thing.
Information is often spread through word of mouth. This is general communication between people, like friends talking to each other.“How did you hear about that new movie?” someone might ask. “Oh, by word of mouth.”
Source: VOANews

See guys ?!, there are many words that people usually use to express their feeling. They might use a sad expression when they feel unhappy too. On the other hand, they might say more polite words when they feel happy to express it. However, we can understand the people's feeling when they're talking to us by looking at their expressions and some words that they use when they're talking to us. Really interesting, Right? :)