1. What does it mean?
갓수 combines god with 백수, someone without a job. It playfully reframes being out of employment as freedom, sometimes imagining a person with enough financial support to enjoy unlimited personal time.
Also written or said as gatsu
2. The nuance
It can be ironic or self-comforting, not a factual claim that unemployment is easy. Avoid using it to minimize someone's job-search stress or financial difficulties.
3. Examples
“평일 낮 산책을 하니 잠깐 갓수 기분이었어.”
Taking a weekday afternoon walk briefly made job-free life feel heavenly.
“갓수라고 농담하지만 다음 달 계획은 고민 중이야.”
I joke that I'm living the carefree jobless life, but I'm thinking about next month's plans.
Sources
References support the meaning and usage. Example sentences are written for NoCapWiki.