狗嘴裡吐不出象牙 [－－里－－－－－]

Jyutping gau2 zeoi2 leoi5 tou3 bat1 ceot1 zoeng6 ngaa4
Pinyin gǒu zuǐ lǐ tǔ bù chū xiàng yá

Definitions (Wiktionary)
  1. phrase, figuratively, idiomatic
    no fine or truthful speech is to be expected from the mouth of a bad person
    (syn.) 狗口裡吐不出象牙, 狗嘴长不出象牙, 狗口里吐不出象牙, 狗嘴長不出象牙