beat your brains out
US /biːt jʊər breɪnz aʊt/
UK /biːt jʊər breɪnz aʊt/

1.
머리를 싸매다, 골머리를 앓다
to think very hard about a problem or question, often without success
:
•
I've been beating my brains out trying to solve this puzzle all day.
하루 종일 이 퍼즐을 풀려고 머리를 싸매고 있어.
•
Don't beat your brains out over it; let's just ask for help.
그것 때문에 머리 싸매지 마. 그냥 도움을 요청하자.