抌心抌肺 [－－－－]

Jyutping dam2 sam1 dam2 fai3
Pinyin dǎn xīn dǎn fèi

Definitions (CC-CANTO)
  1. thumping one's chest with regret, it means one is very upset and is griefing
Definitions (粵典–words.hk)
  1. 動詞
    因為​蝕​底​、​做錯​嘢​而後悔
    to feel regret, to an extent that you want to punch on your own heart; literally, punch heart punch lung
  2. 參看
    揼心揼肺