The quejio, often written simply as ay, is the traditional opening lament of flamenco singing in Andalusia, Spain, used to set the emotional tone before the lyrics begin. Singers stretch and ornament that single syllable to show grief, duende and vocal skill. Online, that same stretched ayyyy has become a reusable reaction sound, shared on soundboards and in short edits whenever a moment needs instant melodrama. Its lack of words makes it work across languages, while the unmistakably flamenco delivery keeps the joke rooted in passionate overreaction rather than generic screaming alone.