Korean Slang
불금
bulgeum
What it means
Friday night — time to go out.
Where it comes from
Short for 불타는 금요일 (burning Friday).
When you'd use it
End-of-week plans and messages.
Example
불금인데 그냥 집에 가?It's Friday night and you're just going home?
Careful
Casual — fine with friends, out of place in formal writing or with your boss.