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Jyutping coi2 nei5 dou1 so4
Pinyin cǎi nǐ dōu shǎ

Definitions (CC-CANTO)
  1. ignore you; I can't be bothered with you
Definitions (Wiktionary)
  1. phrase, Cantonese
    I'd be an idiot if I cared about what you said; I don't care
Definitions (Kaifangcidian)
  1. 不理你
  2. 不理睬你