The phrase messa mura mura uses casual Japanese slang, with messa meaning very much and mura mura suggesting a flustered, excited feeling, which is why the clip travels well beyond Japanese speaking audiences. Short exclamations like this spread through anime fandom, meme pages and soundboard collections, where a one second reaction can be reused in countless contexts. Users share it as a quick audio punchline rather than a full dialogue line, and its short length makes it easy to loop, layer over faces, or drop into chats and edits without explanation.