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Jyutping ngo6 cou4
Pinyin wò cáo

Definitions (Wiktionary)
  1. verb
    to move a knight into the position of 臥槽馬/卧槽马 (wòcáomǎ)

臥槽 [卧-]

Jyutping
Pinyin wò cáo

Definitions (CC-CEDICT)
  1. (Internet slang) (substitute for 我肏[wo3 cao4]) fuck
  2. WTF