The phrase became popular in Brazilian online humor as a shorthand for fake innocence, written the way a simplistic cartoon character might speak. Instead of a full explanation, users just drop the line to suggest they saw nothing, know nothing, and want no trouble. It spread through short videos, group chats, and meme pages where broken Portuguese jokes are remixed endlessly. Its appeal has lasted because the specific image of a horse makes the denial feel random, while the grammar itself signals the joke instantly to Portuguese speakers.