The phrase comes from Chilean street slang, where vo is a shortened, informal way of addressing someone and vieja culia is a coarse insult aimed at an older woman. Shared as a very short voice recording, it spread through meme pages, reaction videos and messaging chats rather than through a film, song or television show. Its appeal is its directness and local flavour, which Spanish-speaking creators reuse whenever they want a reply that sounds fed up and final without explaining the joke.