Cavalo Estourado is widely recognized online as a Brazilian meme sound built around an intentionally distorted horse noise. Its exact first upload is unclear, but it spread through short-form edits, reaction videos, and chaotic compilation clips where creators needed a fast audio cue for instant disorder. The overdriven sound is the whole joke: it turns an ordinary whinny into something extreme and ridiculous. It remains popular because it is short, unmistakable, and easy to drop into sudden-reaction moments, much like a scream meme.