Por supuesto is a common Spanish expression meaning of course, and this clip circulates mainly as a short WhatsApp audio and soundboard snippet rather than as a line tied to a documented film, show or viral video. Its appeal online comes from its usefulness: Spanish speakers recognise it instantly, and it works as agreement, reassurance or mockery without needing translation or extra context. Because it is under a second long, it fits into chats, reaction videos and memes, where a brief spoken reply often feels more expressive than text alone. That versatility keeps it in use as a quick response.