老鼠屎
lou5 syu2 si2lǎo shǔ shǐinferred
English
- bad apple in a group; literally: rat's faeces
粵語 — Cantonese
- 團隊入面最差、會搞破壞嘅人（量詞：粒）
Examples
阿明係我哋成組嘅老鼠屎，因為佢成日都唔做嘢。
Ah Ming is the bad apple of our group because he never does anything.
Sources: rime-cantonese, synthesized, words.hk