with a blink; momentarily, absentmindedly; by mistake
눈 깜빡 한 번만!
Just one blink!
— 박쥐 (2009)
오늘 인 걸 깜빡 했어
I forgot it was today.
— 내 어머니의 모든 것 (1999)
알았으면 눈 깜빡
If you understand, blink.
깜빡 안 물어봤어
I forgot to ask.
— 타인의 삶 (2006)