There is no single well-documented source for this short ok ok ok ok clip, and it circulates mainly as a standalone reaction sound rather than as a quote tied to one film, show or creator. Its appeal comes from its simplicity: four identical words are easy to recognise, easy to drop into a short edit and easy to understand without context. That makes it a useful shorthand for rushed agreement, reluctant acceptance or playful impatience across memes, gaming clips and chat-style videos, where a longer spoken line would slow the joke down.