嗱手唔成勢 [－－－－势]

Jyutping naa4 sau2 m4 sing4 sai3
Pinyin ná shǒu wú chéng shì

Definitions (CC-CANTO)
  1. to be in a dilemma; to be unable to cope with a problem; to be all over the place; to be unprepared to deal with a situation [colloquial]