A short Japanese voice clip saying wakatta de yan, followed by a long buzzing buuuu, used as a funny reaction in meme edits when something finally makes sense.
The clip opens with a brisk, confident Japanese phrase, wakatta de yan, delivered in a playful, slightly cheeky tone that sounds like someone proudly announcing they have finally figured something out. Without pausing, the voice then stretches into a long, wobbly buuuu, a buzzing, almost raspberry-like sound that deflates the moment just as quickly as it built it up. That sudden shift from smug understanding to silly noise is what makes it land, turning a simple realisation into a joke. It feels cartoonish and self-aware, perfect for undercutting a dramatic reveal or celebrating a small, ridiculous victory.
No clear original source is widely documented for this clip, so online it circulates mainly as a short, shareable Japanese reaction sound rather than a named scene from a show or game. Its appeal comes from the contrast in the recording itself, with a confident spoken phrase giving way to an exaggerated buzz that listeners can recognise instantly even without understanding the words. That recognisability has kept it useful for short-form edits, reaction videos and meme compilations, where a few seconds of sound can signal understanding, mock confidence or end a joke.