Short goodbye clips like this spread through soundboards, group chats, and short-form video edits because a single stretched farewell can caption almost any exit. The buh byeee phrasing is used less as a literal greeting and more as a comedic sign-off, posted when a friend leaves a call, a player is knocked out, or a clip ends abruptly. Its popularity comes from timing and tone rather than a specific scene, and it continues to circulate as a reusable reaction sound that viewers understand instantly without any context or setup needed beforehand.