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Neutral Face. It can also be represented with: ":|", ":\", "._.", ".-.", "/:", "|:", "\:", "=/", "=|", "=\", "/=", "|=", "\=", "'_'", "'-'" (Less likely to be used: "-_-", "😐", "😑", ": |", "| :", ":-|", "|-:", etc.) Its reputation has been growing rapidly since 2020 due to the amount of "unfunny" and craps on the internet. Neutral faces can be commonly seen all over the internet. The general purpose or meaning of neutral face is to show that you are currently feeling neutral, annoyed, or feeling disgusted (it can also be used in jokes but the probability is very low), BUT, neutral faces does NOT represent happiness, sadness, anger, fear, or anything that usually doesn't represent neutral in other people's expression when events occurred. Many people have misunderstood the general meaning and purpose of neutral faces. If the sentence and the usage of neutral faces did not match, people would be obfuscated or confused about what emotion you are trying to express. It may be problematic because this may occur conflict or commuting dysfunction and may become harder to resolve. But due to current days' standards, it's rarely criticized and highly normalized on the internet. So it is best to use it when necessary, know where to use, how to use, why to use, and when to use, and don't overuse it everywhere. Or best not to use it.