Bruh became a staple of internet slang as a short, flat response to something stupid, disappointing or hard to believe, and the reverb-heavy version turned that single word into a meme sound in its own right. Creators on short-form video and gaming channels began dropping it over fails, plot twists and awkward clips, where its lingering echo gives the joke extra weight. Like other reaction sounds, it survives because it is instantly recognisable, easy to place and works without any context or explanation.