The word Fein is a derivative of the word fiend that initially meant simply someone who is addicted to drugs or is filled with passion. With time it developed into slang to be used to depict some craving or obsession of intensity particularly within urban or hip-hop culture. Rap lyrics, street talk, and social media platforms like Tik Tok and Twitter were some of the ways through which it spread. Although the form more of slang might seem to be playful, kids should be aware that its origin is a serious context and should be used sparingly.Know more about fein meaning slang (https://saferloop.com/fein-meaning-slang/)