why ... that?
아, 그걸 왜 해?
Oh, why would you do that?
— Tune in for Love (2019)
그걸 왜 지금 물어?
Why are you asking that now?
— 롤라 런 (1998)
그걸 왜 몰라요?
Why don’t you know that?
— Good News (2025)
그걸 왜 속아?
Why would you fall for that?
— Unlocked (2023)