The phrase comes from everyday Tagalog, where demonyo means demon and calling someone may sa demonyo implies they are acting as if possessed. The exact first recording behind this upload is not documented, but the clip circulates on soundboards and in Filipino meme edits as a quick reaction line. Its appeal is the instant switch from normal to chaotic, so editors reuse it for exorcism jokes, rage clips and fake horror scenes. The short length keeps it easy to loop, layer and drop into chats.