借題發揮 [－题发挥]

Jyutping ze3 tai4 faat3 fai1
Pinyin jiè tí fā huī

Definitions (CC-CEDICT)
  1. to use the current topic to put over one's own ideas
  2. to use sth as a pretext to make a fuss
Definitions (粵典–words.hk)
  1. 動詞
    利用​某個​事件​或題​目去​講一​啲​自己​想​講​嘅​嘢​，​通常​係​偏離​原本​嘅​題​目​，​主要​講述​自己​嘅​不​滿
    to seize on an incident or discussion topic to express one's own views, usually in some kind of off-topic rant; literally "to borrow a topic to display (something else)"
    • 阿松一聽到人提起考試就借題發揮，喺度大講自己上次考第一嘅事。
      阿松一听到人提起考试就借题发挥，喺度大讲自己上次考第一嘅事。
      aa3 cung4 jat1 teng1 dou2 jan4 tai4 hei2 haau2 si5 zau6 ze3 tai4 faat3 fai1, hai2 dou6 daai6 gong2 zi6 gei2 soeng6 ci3 haau2 dai6 jat1 ge3 si6.
      Upon hearing someone mention exam, A-chung seized the opportunity, and started to talk about how he aced the last exam.
Definitions (Wiktionary)
  1. phrase, idiomatic
    to seize on an incident to express one's own ideas
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）
Examples (粵典–words.hk)
  1. Cantonese
    阿松一听到人提起考试就借题发挥，喺度大讲自己上次考第一嘅事。
    阿松一聽到人提起考試就借題發揮，喺度大講自己上次考第一嘅事。
    aa3 cung4 jat1 teng1 dou2 jan4 tai4 hei2 haau2 si5 zau6 ze3 tai4 faat3 fai1, hai2 dou6 daai6 gong2 zi6 gei2 soeng6 ci3 haau2 dai6 jat1 ge3 si6.
    • Upon hearing someone mention exam, A-chung seized the opportunity, and started to talk about how he aced the last exam.