Because 'for crying out loud' is a substitute for something else, it is difficult to find its meaning. Whereas, if you said 'for christ's sake', it would be clear that this was an appeal for divine intervention. Which one should i use?

Please tell me your opinion and the reason why you choose it. The description of a dangerous, sudden, loud, or explosive act occurring: Setting off an explosion, sounding off at roll call (i. e. Shouting out present, here, or something like that in response to.