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Jyutping maa1 nei5 go3 bei1
Pinyin mā nǐ ge bī

Definitions (Wiktionary)
  1. phrase, slang, vulgar
    Synonym of 媽了個屄/妈了个屄 (mā le ge bī, “fuck you”).
    (syn.) 媽了個屄, 妈了个屄