一腳牛屎 [－脚－－]

Jyutping jat1 goek3 ngau4 si2
Pinyin yī jiǎo niú shǐ

Definitions (CC-CANTO)
  1. a foot covered in cow dung, it is used to describe a person getting himself/ herself in big trouble which is hard to get out of
Definitions (粵典–words.hk)
  1. 語句
    用​嚟​形容​鄉下​佬
    a country cousin; country bumpkin; literally, legs covered in bull shit