The original recording behind this clip is not documented, so it is best understood as an internet reaction sound rather than a line from a known film, show, or game. Its humour comes from pairing the informal slang bruh, long used online to signal disbelief or disappointment, with the blunt word poop, creating a childish but deadpan insult that fits short-form humour. As meme editors reused it over fails, pranks, and gross-out clips, it spread as a quick audio shorthand for disgust, and it remains popular because it is short, instantly recognisable, and easy to drop into any awkward moment.