食屎大
sik6 si2 daai6shí shǐ dà
English
- to have shit for brains [colloquial]
- to be stupid, to be unresponsive, like an animal like to eat shit. Literally: to grown up by eating shit
粵語 — Cantonese
- 鬧人蠢鈍、笨拙，好似低等動物咁靠食屎長大
Examples
做少少嘢都錯，你係咪食屎大架？
You can't do anything right; are you really that stupid?
Sources: cc-canto, rime-cantonese, words.hk