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Jyutping nei5 gong2 je5 aa4
Pinyin nǐ jiǎng yě ya

Definitions (粵典–words.hk)
  1. 語句
    反問​句​;​同人爭​執時​,​用​嚟​挑戰​對方​講​嘅​嘢​;​有​恐嚇​對​方​嘅​意思
    phrase used to challenge or dare someone with a threatening tone; "you're full of shit!", "who the hell are you?" (literally: are you talking?)

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Jyutping nei5 gong2 je5 aa3
Pinyin nǐ jiǎng yě ya

Definitions (CC-CANTO)
  1. 'did you say something?' (said in a rhetorical way when you try to mock someone if you disagree with what they have said or think they are talking a load of nonsense) [colloquial]
Definitions (Wiktionary)
  1. phrase, Cantonese
    Are you kidding me?; Nonsense!; Bullshit!
    • 你講嘢呀你。
      你讲嘢呀你。
      nei5 gong2 je5 aa3 nei5.
      Are you kidding me?
Examples (粵典–words.hk)
  1. Cantonese
    你讲嘢呀?我明明睇住你偷食咗件蛋糕。
    你講嘢呀?我明明睇住你偷食咗件蛋糕。
    nei5 gong2 je5 aa4? ngo5 ming4 ming4 tai2 zyu6 nei5 tau1 sik6 zo2 gin6 daan6 gou1.
    • You are lying! I saw you eating the cake with my own eyes.
Examples (Wiktionary)
  1. Cantonese
    你讲嘢呀你。
    你講嘢呀你。
    nei5 gong2 je5 aa3 nei5.
    • Are you kidding me?