1. What does it mean?
누칼협 shortens a question asking whether someone forced you at knifepoint. As internet slang, it dismisses a complaint by saying the person chose the situation themselves. The violent wording is usually rhetorical rather than a report of an actual threat.
Also written or said as nukalhyeop
2. The nuance
It often communicates contempt or blame. Understanding the word does not make it a considerate response, especially when someone's real hardship is being discussed.
3. Examples
“고민 글에 누칼협만 달려 있어서 씁쓸했어.”
It felt bitter to see only 'nobody forced you' replies under a post asking for help.
“상대 사정도 모르고 누칼협이라고 단정하고 싶진 않아.”
I don't want to dismiss someone with 'nobody forced you' without knowing their situation.
Sources
References support the meaning and usage. Example sentences are written for NoCapWiki.