老貓燒鬚 [－猫烧须]

Jyutping lou5 maau1 siu1 sou1
Pinyin lǎo māo shāo xū

Definitions (CC-CANTO)
  1. (slang) even a skillful / experienced person or an expert would make mistakes sometimes; even Homer nods
Definitions (粵典–words.hk)
  1. 語句
    比喻​有長​年經​驗​嘅​人​都​會​一​時​失手
    to fail a task which he/she should be familiar with even though he/she is experienced; literally: old cat burns its whiskers
    • 睇住好喎，免得老貓燒鬚啦。
      睇住好㖞，免得老猫烧须啦。
      tai2 zyu6 hou2 wo3, min5 dak1 lou5 maau1 siu1 sou1 laa1.
      You'd better watch out, so as to avoid failure despite your experience.
  2. 近義詞
    氹仔浸蛟龍
Definitions (Wiktionary)
  1. phrase, Cantonese, idiomatic
    an experienced person making mistakes or failing at something that should be familiar
Definitions (Kaifangcidian)
  1. 老馬失蹄 – 老马失蹄
  2. 老手一時失手 – 老手一时失手
  3. 資深的人失算 – 资深的人失算
  4. 老馬也有失蹄時 – 老马也有失蹄时
Examples (粵典–words.hk)
  1. Cantonese
    睇住好㖞，免得老猫烧须啦。
    睇住好喎，免得老貓燒鬚啦。
    tai2 zyu6 hou2 wo3, min5 dak1 lou5 maau1 siu1 sou1 laa1.
    • You'd better watch out, so as to avoid failure despite your experience.