Cocorico is the Portuguese and French spelling of the sound a rooster makes, the equivalent of cock-a-doodle-doo in English, and it has long been used in cartoons, storybooks and farmyard scenes to signal dawn. Online, the short crow works as a ready-made reaction sound because it needs no translation: listeners recognise the animal instantly and connect it with mornings, farms and waking up. That instant recognition keeps it useful for memes, edits and children's content.