I'm going to hit my brother with a beanie I have.
Why are you going to hit your brother?
I have a lot of anger and want to take it out on him.
Well, he didn't do anything to cause your anger.  It isn't fair to take it out on him.
I don't care I'm going to do it and it's not hurting anyone.
You shouldn't hit him for no reason. Even if it won't hurt much it's an immature thing to do.