Angry Birds

I really don't get it sometimes. Why are some people just so surly and annoyed all the time. Even though no one has done anything whatsoever to so much as piss that person off in any way.

Day in and out, frown, frown, and frown. Why so angry?

You don't have to be friendly to any stranger in the streets, but I am sure you can afford to be a little bit nicer to the people you see on a daily basis.

Even an innately angry person like me will always try to look at least expressionless whenever someone looks my way, so that I don't convey any kind of unpleasantness. Or at least I am trying to. I get frustration. But all the time frustrated? Why so?

Hmmm...