So here is my question?

[lorenzomichael]

Can somebody answer this question? What the hell does "For crying out loud" even mean?

[Lliam]

“For crying out loud” is an expression of frustration, impatience, or exasperation.
The phrase for originated in the United States in the 1920s, and the cartoonist Thomas Aloysius Dorian is credited with popularizing the idiom.
The inappropriate oath replaced by "for crying out loud" is "for Christ's sake".

[Anonymous]

According to the dictionary it means:

Used to express frustration, exasperation, or annoyance.

[WhitneySnow]

It’s an expletive that’s mild enough that you can say it around kids

[OlderAndWiser]

It means "Holy cow!"

[Yannishka]

Same as "for fucks sake"