The chant comes from Squid Game, the 2021 Netflix survival drama, where a giant animatronic doll sings it during the Red Light, Green Light round. In the original Korean children's game, players advance while the phrase is sung and must freeze when it ends. The show turned that innocent rhyme into a signal for elimination, and clips of the doll's voice quickly spread on TikTok, YouTube and reaction videos. It remains popular because it instantly signals tension, stillness and a game about to go wrong.