The chant comes from Narendra Modi's campaign speeches ahead of the 2021 West Bengal assembly election, where he repeatedly used Didi O Didi while attacking Mamata Banerjee. Clips of the line spread quickly on social media and news channels, spawning remixes, reels and reaction videos that stripped it of its original rally context. It endures because the sing-song delivery is easy to imitate and instantly recognisable in India, making it a shorthand for playful political teasing rather than a serious speech excerpt.