執屎 [执－]

Jyutping zap1 si2
Pinyin zhí shǐ

Definitions (粵典–words.hk)
  1. 動詞
    比喻​負責​一​啲​人​哋​唔​想​做​、​辛苦​得來​又​冇​乜​回​報​嘅​工作
    to handle unpopular task; literally: to pick shit