Pop Cat grew out of a viral internet meme built around a cat whose mouth snaps open in a wide, round shape, paired with a short popping noise. Shared widely on social media, the image was remixed into edits, songs and reaction clips, and it later inspired a simple online clicking game in which every click makes the cat pop. Its appeal has lasted because the gag needs no language or context: one tiny pop instantly signals silliness, surprise or playful mockery in a video.