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Jyutping sik6 mung2
Pinyin shí měng

Definitions (Wiktionary)
  1. verb, Cantonese
    to "eat something that made one act stupid"
    • 食懵咗呀你?
      食懵咗呀你?
      sik6 mung2 zo2 aa3 nei5?
      Did you eat yourself silly [recently]?
Examples (粵典–words.hk)
  1. Cantonese
    你走去偷公司钱?你系咪食懵咗啊你?
    你走去偷公司錢?你係咪食懵咗啊你?
    nei5 zau2 heoi3 tau1 gung1 si1 cin2? nei5 hai6 mai6 sik6 mung2 zo2 aa3 nei5?
    • You have stolen money from the company? Are you dumb or what?
Examples (Wiktionary)
  1. Cantonese
    食懵咗呀你?
    食懵咗呀你?
    sik6 mung2 zo2 aa3 nei5?
    • Did you eat yourself silly [recently]?