Bruh grew as a casual slang expression of disbelief online before short-form video turned the spoken version into a reusable reaction clip. The long variant pushes that idea further, stretching the delivery so it suits slower reveals and longer embarrassment rather than a quick cutaway. It spread through meme edits, gaming videos and comment-style reposts where a single word could replace a whole reaction face. Its staying power comes from that simplicity, since viewers instantly understand the tone without needing context from any specific show, film or creator.