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Jyutping ok3 jan4 sin1 gou3 zong6
Pinyin è rén xiān gào zhuàng

Definitions (CC-CEDICT)
  1. the guilty party files the suit
  2. the thief cries thief
Definitions (粵典–words.hk)
  1. 語句
    衰人​、​理​虧​嘅​人​搶​先​冤枉​人
    the guilty party manages to turn the tables on the victim
    • 明明係你打尖,你仲惡人先告狀?
      明明系你打尖,你仲恶人先告状?
      ming4 ming4 hai6 nei5 daa2 zim1, nei5 zung6 ok3 jan4 sin1 gou3 zong2.
      It's you who jumped the queue. Why are you accusing me?
Definitions (Wiktionary)
  1. phrase, idiomatic
    the bad guy is the first to sling accusations
Examples (粵典–words.hk)
  1. Cantonese
    明明系你打尖,你仲恶人先告状?
    明明係你打尖,你仲惡人先告狀?
    ming4 ming4 hai6 nei5 daa2 zim1, nei5 zung6 ok3 jan4 sin1 gou3 zong2.
    • It's you who jumped the queue. Why are you accusing me?