for crying out loud不是哭得很大声，而是搞什么名堂；大声哭出来。

【例句】
For crying out loud! Why did you have to do that?
真是岂有此理！你为什么非得干那种事？

I mean, what's he ever done in his life, for crying out loud?
我的意思是，天啊，他一生中到底做过什么呀？