[----]

Jyutping loeng4 sam1 dong3 gau2 fai3
Pinyin liáng xīn dāng gǒu fèi

Definitions (粵典–words.hk)
  1. 語句
    人​哋​幫​你​冇​感恩​不特止​,​仲以​為​人​哋​害​你
    to be ungrateful for a favour and regard it as a disservice; to not know what is good for one; literally: to treat a good heart as a dog's lung
    • 畀個良心你當狗肺?我真係幫錯你啊!
      畀个良心你当狗肺?我真系帮错你啊!
      bei2 go3 loeng4 sam1 nei5 dong3 gau2 fai3, ngo5 zan1 hai6 bong1 co3 nei5 aa3
      x

[----]

Jyutping loeng4 sam1 dong3 gau2 fai3
Pinyin liāng2xin dāng gǒu fèi

Definitions (CC-CANTO)
  1. to be ungrateful