The exact source of this particular “byeeeeee” clip is unclear from the available information, but sounds like this spread widely through short meme edits, reaction compilations and chat-style videos online. Its staying power comes from how quickly it communicates dismissal, playful shade or a clean comedic exit in just over a second. Creators keep using it because it is simple, instantly readable and easy to place at the very end of a scene without interrupting the pacing.