"Oh Man" Who is oh MAN: Who are we Really calling On

"Oh man", I just broke my phone, “Oh MAN"...But who is this “old man". Muslims say " Ya Allah ", the "ya", you guested, means "oh" or rather something close to that; therefore " Ya Allah " would mean” Oh God.” BUT, who or what is "oh man" referring to, and perhaps more importantly, why? Why do we see a need to have an expression like this? When Adam slipped by eating of the forbidden tree in the Garden of Paradise, he certainly did Not have said "oh man" because Adam was the only man alive at that time. Adam's wife would not have said "oh man", because even though she was placed in the Garden of Paradise before Adam, she only knew one man: Adam.