The origin of the 'Who? (bruh)' clip is undocumented, with no confirmed source work, speaker, or upload date in the available data. It exists as a user-uploaded soundboard clip under half a second long, typical of short reaction sounds traded online. Its continued use comes from its size and clarity: the two-word question and dismissal fit neatly over quick cuts, fails, and confusing moments without needing context. Because it makes no specific reference, creators can reuse it across many formats.