1 is a homonym for Feel, meaning feeling, cuteness and so on. Fu, as a network term feel, first appeared in the post bar, and then became popular in major forums.
2. It's short for fuck you, and it's a common swear word in English, and everyone basically knows it; In addition, it also means "roll". Similarly, for example, IOU is the abbreviation of I love you, which means "I love you"
3, it is the pinyin writing of "Fu", which means to be convinced. This situation is generally the reason why the input method is not switched well, and it is typed directly into English.
Therefore, when a boy says Fu, you should first judge it in context to see what it means. Because several meanings are very different, don't get into an awkward position because of misunderstanding.