頓大龜 [顿－龟]

Jyutping deon6 daai6 gwai1
Pinyin dùn dà guī

Definitions (Wiktionary)
  1. verb, Hokkien, Quanzhou, Xiamen
    fall on one's bottom; sitting down hard
    (syn.) 顿跋坐, 顿龟, 屁股蹲儿, 屁股蹲兒, 頓大坐, 頓龜, 顿大坐, 顿坐坐, 頓跋坐, 頓坐坐