The sound comes from a supporter recorded at a World Cup fan fest, where Mexico fans gather away from the stadium to watch matches together on big screens. Fan fests are known for loud, communal chanting, and this short Mexico Mexico ra ra ra call became a handy shorthand for that atmosphere online. Creators reuse it whenever they want instant Mexican football energy without needing a full match broadcast, and its short length makes it easy to drop into edits, memes and reaction clips. It remains popular because the chant is simple, joyful and immediately tied to supporting Mexico.