Idi nakhui is a common Russian swear phrase meaning go away in its harshest form, and it has circulated for years in Russian-language chats, streams, and short videos as a blunt dismissal. Short audio clips of the phrase are shared on soundboards because the wording is instantly recognisable even to listeners who know only a little Russian, and the aggressive delivery makes it useful for comedy and confrontation alike. Its staying power comes from that simplicity: two words, no context needed, and a clear emotional hit that fits memes, edits, and live reactions.