打蹩腳老虎 [－－脚－－]

Jyutping daa2 bit6 goek3 lou5 fu2
Pinyin dǎ bié jiǎo lǎo hǔ

Definitions (Wiktionary)
  1. phrase, Xiang, idiomatic
    to kick someone when they are down
    (syn.) 落井下石, 打落水狗