jung6 si2 fat1 nam2 je5用屎忽諗嘢用屎忽谂嘢
Jyutpingjung6 si2 fat1 nam2 je5
Yaleyuhng sí fāt nám yéh
Definition
To think in an incredibly stupid or irrational way; to think with one's butt.
slangslangbody
How it's used
Using this phrase is a very aggressive way to insult someone's intelligence or decision making. It implies that the person's logic is so flawed that it could only have originated from their backside rather than their brain. Because it references a body part, it is considered vulgar and should be avoided in professional or formal settings.
Examples
Are you thinking with your butt? You don't even know something this simple?
Related words
Common phrases
thinking with one's butt (as a rhetorical question)
Common mistake
Do not confuse this with simply calling someone stupid. This phrase specifically attacks the process of thinking or the quality of a specific idea or plan, rather than just describing a person's general character.
Grammar color guide
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Grammar guides
- In 30 secondsThe whole language at a glance. No tenses, no plurals, six tones, sentence particles. Read this before you dive into any specific topic.
- ParticlesSentence particles add tone, emotion, and nuance. Learn the most common particles in Cantonese and how to use them.
- Possession (嘅)How to say my, your, and his, and how to link a describing word to a noun, all with the little word 嘅 (ge3).



