Onyxia is a dragon boss from World of Warcraft, and a wipe is gamer slang for the moment an entire party is defeated at once. Clips of spectacular raid failures have circulated in gaming communities since the early days of online video, and this shouted reaction became a shorthand for that exact disaster. It spread through raid montages, streamer highlights and meme edits, where a single voice can tell viewers everything went wrong without any explanation. It remains popular because every multiplayer game still produces the same sudden, shared collapse.