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Jyutping hei2 mo1 san4
Pinyin qǐ mó shén

Definitions (Wiktionary)
  1. verb, Hokkien, Xiamen
    to act shamelessly; to nag unreasonably
    (syn.) 起魔
  2. verb, Xiamen, Zhangzhou-Hokkien
    to go crazy; to go mad; to lose one's mind; to go nuts; to freak out