What can I do about my brother? (Any help would definately be appreciated)?

I'm sorry about your situation, maybe you could try talking to your parents about it? I know that they have ignored you in the past but they might not know how you really feel about it. I know that when my sister acts like this it always helps to talk to my mom. If that doesn't work try ignoring him. I know it's hard but boys do things like this to get a reaction and when you react it encourages him. If you just shrug it off and say whatever he'll hopefully stop. Don't listen to him he's wrong and don't let him bring down your life. Hope this helps. :)