毛都未生齊 [－－－－齐]

Jyutping mou4 dou1 mei6 saang1 cai4
Pinyin máo dōu wèi shēng qí

Definitions (粵典–words.hk)
  1. 語句
    後​生細​仔​嘅​思想​同處​事​能力​，​同未​發育​晒​嘅​身​體​一​樣​，​都​係​唔​成熟​，​而且​經驗​不足
    young and ignorant, young and inexperienced; immature; literally: not yet sprouted a hair
  2. 參看
    毛都未出齊

毛都未生齊 [－－－－齐]

Jyutping mou4 dou1 mei6 sang1 cai4
Pinyin máo dōu wèi shēng qí

Definitions (CC-CANTO)
  1. used as insult for someone who is young and inexperienced, implying that they are not qualified enough to do or say something or voice any opinion [colloquial]