死骨頭 [－－头]

Jyutping sei2 gwat1 tau4
Pinyin sǐ gǔ tou

Definitions (Wiktionary)
  1. noun, Xiamen, Zhangzhou-Hokkien, vulgar
    monkey business; dirty trick (used as an intensifier)
    (syn.) 鬼名堂, 死人骨头, 死人骨頭