I don't do things like this much, and I didn't feel like doing much else than sketching this.

I'm just feeling down right now.

"...my teacher told me once that crying is a kind of defensive mechanism that occurs automatically, after some incident. Defensive mechanism as it sounds like...we are supposed to feel better after crying. Just like when we are afraid or shocked, we shout.
So, if you feel like crying, just cry..." (comment I found when looking up "Why do we cry when we are sad?")