I'm so much more eloquent when sad

Crying in public always leaves me in this surreal state.
I was in a very odd place yesterday afternoon (I cried in class). Crying in public you're surrounded by people, who you know all know that you're crying, but what can they do about it?

I felt so separated from everything after I had started to calm down.
I was drained; exhausted. I started to think about how alone I felt as I walked home. I didn't know why I had started to cry, it was from somewhere between confusion, frustration and embarrassment.
I started to think about how selfish crying is, the first time we cry it is because we can't communicate in any other way, we can't show our own needs. So how come as an adult I still can't seem to do that? What is it that made me so incapable of expressing my need that I started to cry.

This is all just garble, it was all much more eloquent in my cynical, melancholic mind yesterday afternoon.