０氹鬼食豆腐 [－－－－－－]

Jyutping tam3 gwai2 sik6 dau6 fu6
Pinyin shán guǐ shí dòu fu

Definitions (CC-CANTO)
  1. a feeble attempt to trick someone or to lure someone into a trap that is very easy to see through [colloquial]