눈 감으면 코 베어 갈 세상

nun gameumyeon ko beeo gal sesang

Word for word

“A world where they'd cut off your nose if you closed your eyes.”

What it means

A tough world where you have to stay alert or get cheated.

When you'd say it

After hearing about a new scam or a rip-off.

Example

택배 문자로도 사기를 친대. 눈 감으면 코 베어 갈 세상이야.They scam people with fake delivery texts now. Close your eyes and you'll lose your nose.