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Jyutping gap1 si2
Pinyin jí shǐ

Definitions (CC-CANTO)
  1. urgently needing to go to the toilet
Definitions (粵典–words.hk)
  1. 形容詞、俚語
    好​有​迫切需要​去​屙​屎​、​大便
    to need urgently to defecate; literally: urgent shit
    • 我好急屎,可唔可以幫我睇住啲嘢先?
      我好急屎,可唔可以帮我睇住啲嘢先?
      ngo5 hou2 gap1 si2, ho2 m4 ho2 ji5 bong1 ngo5 tai2 zyu6 di1 je5 sin1?
      I need to poo, an urgent one. Can you look after the stuff for me?
  2. 近義詞
    屎急
Definitions (Wiktionary)
  1. verb, Cantonese
    to (urgently) need to defecate
Definitions (Kaifangcidian)
  1. 憋著大便 – 憋着大便
  2. 急於大便 – 急于大便
  3. 有便意
  4. 憋不住屎
Examples (粵典–words.hk)
  1. Cantonese
    我好急屎,可唔可以帮我睇住啲嘢先?
    我好急屎,可唔可以幫我睇住啲嘢先?
    ngo5 hou2 gap1 si2, ho2 m4 ho2 ji5 bong1 ngo5 tai2 zyu6 di1 je5 sin1?
    • I need to poo, an urgent one. Can you look after the stuff for me?