「捉痛腳」

(pos:動詞)
<explanation>
yue:利用或者搵出人哋嘅弱點或者把柄
eng:to exploit the weakness of others, to go for the weak spot; literally: to grab sore leg
<eg>
yue:佢成日偷睇人哋啲信，想話捉到人痛腳。 (keoi5 seng4 jat6 tau1 tai2 jan4 dei6 di1 seon3, soeng2 waa6 zuk1 dou2 jan4 tung3 goek3.)
eng:He is always snooping others' correspondence in the hope of finding the goods on others.