拉不出屎來賴茅坑 [－－－－来赖－－]

Jyutping laai1 bat1 ceot1 si2 lai4 laai6 maau4 haang1
Pinyin lā bù chū shǐ lái lài máo kēng

Definitions (Wiktionary)
  1. phrase, idiomatic
    to unreasonably blame one's tool or others when unable to do something