The “boi” sound has circulated widely in meme edits, short reaction videos, and reposted compilations as a fast comedic cue. Because the clip is so short and generic in wording, it spreads more through editing culture than through one clearly cited source. Online, it is often used the same way as bruh: a compact reaction that marks disbelief, annoyance, or mock judgment. Its staying power comes from being instantly recognizable, easy to place on a cut, and flexible across many kinds of meme formats.