The phrase is a well known Russian profanity used as a strong expression of anger, shock and disbelief, roughly equivalent to a very rude outburst about someone's mother. Short clips of people shouting it have circulated for years on Russian speaking social media, gaming streams and meme soundboards, where the two second length makes it easy to reuse. It remains popular because the delivery is instantly recognisable even to viewers who do not speak Russian, and the explosive tone alone communicates the reaction without any context or translation needed.