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Jyutping jat1 gong2 cou4 cou1 cou4 cou1 zau6 dou3
Pinyin yī jiǎng cáo cāo , cáo cāo jiù dào

Definitions (粵典–words.hk)
  1. 語句
    一​講​嗰​個​人​,​嗰​個​人​就​喺​冇​預​料​嘅​情​況​下​出​現​喺​面前
    someone appears unexpectedly when he has been just talked about, "talk of the devil", "speak of the devil and he comes running"
    • 啱啱講緊佢,佢就行咗入嚟,真係一講曹操,曹操就到。
      啱啱讲紧佢,佢就行咗入嚟,真系一讲曹操,曹操就到。
      We were just talking about him, and there he came— talk of the devil.

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Jyutping jat1 gong2 cou4 cou1 cou4 cou1 zau6 dou3
Pinyin yī jiǎng cáo cāo , cáo cāo jiù dào

Definitions (CC-CANTO)
  1. speaking of the devil and he shall appear, when something/ someone being discussed appear unexpectedly
Examples (Tatoeba—Cantonese-English)
  1. Cantonese
    一讲曹操,曹操就到。
    一講曹操,曹操就到。
    jat1 gong2 cou4 cou1 , cou4 cou1 zau6 dou3 。
    • Speak of the devil.
Examples (粵典–words.hk)
  1. Cantonese
    啱啱讲紧佢,佢就行咗入嚟,真系一讲曹操,曹操就到。
    啱啱講緊佢,佢就行咗入嚟,真係一講曹操,曹操就到。
    • We were just talking about him, and there he came— talk of the devil.