扮死狗 [－－－]

Jyutping baan6 sei2 gau2
Pinyin bàn sǐ gǒu

Definitions (CC-CANTO)
  1. to act as if one doesn't know something [colloquial]
Definitions (粵典–words.hk)
  1. 動詞
    扮無知​、​裝作​唔​明白​一件​事​，​以​逃避​責任
    to pretend not to know, to behave as if one doesn't know something. Literally: to pretend to be a dead dog
  2. 近義詞
    扮傻