Don't bite their head off

Why is it when someone is faced with so much chaos in their life that their head is about to explode they bite the head off every person around them? It won't help them a bit but they do it despite the fact and usually unaware of the pain that their actions have on those who they lash out on. Don't spew your anger onto others no more than you should spread your germs on others if you had the flu. Anger makes people sick so don't spread it!