The bruh sound became a staple reaction clip during the Vine era and carried over to YouTube, TikTok and Discord soundboards as shorthand for a bruh moment. The sus angle grew with Among Us memes, where calling someone suspicious became its own joke. Mashing the two ideas together gave creators a single button for fails that also look shady. It stays popular because it is instant, recognisable in under a second, and works without any visual context, even as a chat reply or live stream alert.