老虎頭上釘虱乸 [－－头－钉－－]

Jyutping lou5 fu2 tau4 soeng6 deng1 sat1 naa2
Pinyin lǎo hǔ tóu shàng dīng shī nǎ

Definitions (粵典–words.hk)
  1. 語句
    得罪​強​勢​嘅​人​或者​組織
    to provoke a powerful person or organisation; literally: to put lice on the tiger's head
  2. 參看
    老虎頭上釘蝨乸