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Jyutping buk6 zik6
Pinyin pū zhí

Definitions (Wiktionary)
  1. verb, Cantonese, slang
    to fail utterly; to be screwed

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Jyutping puk1 zik6
Pinyin pū zhí

Definitions (粵典–words.hk)
  1. 形容詞、粗俗
    徹底​失敗​;​衰​咗
    to fail utterly
    • 今日考試一題都唔識,實仆直喇!
      今日考试一题都唔识,实仆直喇!
      gam1 jat6 haau2 si3 jat1 tai4 dou1 m4 sik1, sat6 puk1 zik6 laa3!
      I don't even know a single question in today's exam. I must fail the test!

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Jyutping buk6 zik6
Pinyin pú zhí

Definitions (CC-CANTO)
  1. it is a swearing phrase which means falling on the street to the extent that someone lays flat on the ground, it is used to describe a bad situation
Examples (粵典–words.hk)
  1. Cantonese
    今日考试一题都唔识,实仆直喇!
    今日考試一題都唔識,實仆直喇!
    gam1 jat6 haau2 si3 jat1 tai4 dou1 m4 sik1, sat6 puk1 zik6 laa3!
    • I don't even know a single question in today's exam. I must fail the test!