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Jyutping gaau2 mat1 gwai2
Pinyin gǎo miē guǐ

Definitions (CC-CANTO)
  1. what are you doing ? what is going on ?
Examples (粵典–words.hk)
  1. Cantonese
    你件衫搞乜鬼呀?打晒褶咁嘅?
    你件衫搞乜鬼呀?打晒褶咁嘅?
    • How the heck is your shirt doing ? all ruffled ?
  2. Cantonese
    喺厨房搞乜鬼啊,乒乒乓乓噉!
    喺廚房搞乜鬼啊,乒乒乓乓噉!
    • What are you doing in the kitchen? It's noisy.
Examples (Wiktionary)
  1. Cantonese
    你搞乜鬼呀?
    你搞乜鬼呀?
    nei5 gaau2 mat1 gwai2 aa3?
    • What the hell are you doing?