blow someone's brains out
US /bloʊ ˈsʌm.wʌnz breɪnz aʊt/
UK /bloʊ ˈsʌm.wʌnz breɪnz aʊt/

1.
把某人的脑袋打爆, 开枪打死某人
to kill someone by shooting them in the head
:
•
He threatened to blow someone's brains out if they didn't comply.
他威胁说,如果他们不服从,就会把某人的脑袋打爆。
•
The villain swore he would blow someone's brains out if his demands weren't met.
恶棍发誓,如果他的要求得不到满足,他就会把某人的脑袋打爆。