The chant comes from Squid Game, the South Korean Netflix series released in 2021, where contestants play a deadly version of the children's game Mugunghwa. The oversized animatronic doll sings to signal when players may move and scans for motion when she turns. Clips of the scene spread rapidly on TikTok and YouTube Shorts after release, turning the melody into shorthand for freezing under pressure. It remains popular because viewers instantly recognize the rules and danger even in unrelated contexts.