Free games that are angry, short-tempered, and good for when I'm cranky?

Nothing Angry Birds-related will do me any good when I'm grumpy. When I'm in school, unless if I'm at lunch or told otherwise, I'm going to have my iPhone put away at all times if I'm NOT listening to music. I'm not mad, I just want to know what I can do to stay angry and NOT CAUSE ANY TROUBLE! I want to know what free game on my phone I can have when I'm upset. Any suggestions anybody?

Killing pedestrians in real life is a good one.

I can't think of any angry (but free) games in the app store that I can play to either get angry or be angry.

Fit the fat. It is an annoying hard game where you are supposed to make a fat guy jump over a rope.

Flappy Bird.