話頭醒尾 [话头－－]

Jyutping waa6 tau4 sing2 mei5
Pinyin huà tóu xǐng wěi

Definitions (CC-CANTO)
  1. (slang) smart; shrewd; astute; clever; able to comprehend or figure out something quickly without the need for explicit instructions or explanation; able to quickly pick up on a hint
Definitions (粵典–words.hk)
  1. 語句
    只​需要​講解​開頭​部份​，​好​快​就​明​剩低​係​點​、​跟​住​要點​做
    to be able to take a hint; to be quick on the uptake; to understand quickly; smart; clever
  2. 反義詞
    牛皮燈籠
Definitions (Wiktionary)
  1. phrase, Cantonese, idiomatic
    able to take a hint; clever; intelligent
Definitions (Kaifangcidian)
  1. 舉一反三 – 举一反三
  2. 觸類旁通 – 触类旁通
  3. 善解人意
  4. 聰明伶俐 – 聪明伶俐
  5. 反應靈敏 – 反应灵敏
  6. 一說就明白 – 一说就明白
Examples (粵典–words.hk)
  1. Cantonese
    佢几醒目㗎，话头醒尾。
    佢幾醒目㗎，話頭醒尾。
    keoi5 gei3 sing2 muk6 gaa3, waa6 tau4 sing2 mei5.
    • He is a smart fellow, you don't need to spell everything out for him.