His temper was worse when I was younger, which is saying something.. My dads the reason why I'm so scared when adults yell at me. I'm 15. I've never lived with him, but I see him once in a while. My dad got really mad at my step brother and he hit the back of his head, and then whenever he gets mad enough at my step sister he grabs the back of her neck, and he yells a lot, on the top of his lungs, and it scares the crap out of me, I'm scared of him when he gets mad, that's why I always try to stay quiet when he's angry.. What should I do?