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Jyutping saang1 mong1 gwo2
Pinyin shēng máng guǒ

Definitions (粵典–words.hk)
  1. 動詞、俚語
    生​性病
    to get a sexually transmitted disease; literally: to grow mangoes

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Jyutping saang1 mong1 gwo2
Pinyin shēng máng2guo

Definitions (CC-CANTO)
  1. to contract a sexually transmitted disease [colloquial]