死人骨頭 [－－－头]

Jyutping sei2 jan4 gwat1 tau4
Pinyin sǐ rén gǔ tou

Definitions (Wiktionary)
  1. noun, Min-Nan
    skeleton of a dead person
    (syn.) 尸骸, 尸骨, 屍骨, 屍骸
  2. noun, Hokkien, Quanzhou, Xiamen, vulgar
    monkey business; dirty trick (used as an intensifier)