The line comes from The Quest for Cheese, a short comedy sketch circulated on YouTube, where the poker correction is dropped into an unrelated scene for absurd effect. Clipped on its own, the moment became a portable reaction sound on meme soundboards, shared for game nights, streams and edits where someone misreads the stakes. Its staying power is the deadpan delivery, which lets creators reuse the same correction across poker fails, board game arguments and any moment played with misplaced seriousness online.
About this sound
A short voice clip saying this is not poker, from The Quest for Cheese sketch, used as a deadpan reaction when a game or situation is taken too seriously.
The clip is a single deadpan line delivered in a flat, matter of fact tone: this is not poker. There is no music or background noise, just the dry voice landing the correction like it should be obvious. That contrast is what makes it funny, because the speaker treats a silly or chaotic moment as if it were a serious rule violation. It works as an instant reality check, cutting tension and making the other person look like they are trying far too hard at the wrong game.