太監騎馬 [－监骑马]

Jyutping taai3 gaam3 ke4 maa5
Pinyin tài jiān qí mǎ

Definitions (粵典–words.hk)
  1. 語句、粗俗
    歇後語​，​下​半句​係​「​冇​撚​得​頂​」
    fucking good; literally: a eunuch rides a horse