Maullido hormonal circulates online as a short TikTok-style reaction sound, where a single over-the-top cat meow is used to stand in for human desire, jealousy or dramatic longing. Because the joke does not depend on a specific show, language or storyline, it travels easily between Spanish-language edits and wider meme pages, with creators reusing it whenever a moment feels thirsty rather than simply cute. Its staying power comes from that flexibility: the same meow can mock a crush, a celebrity moment or a pet demanding attention, without needing any explanation for viewers to get it.