Dear dish-it,
 Friends have your back. They are supportive, don't boss you around too much, don't usually cause you physical harm and then laugh. I know this.
 My "Friend" stinks! She not only yells at me "Mine, all mine." And acts like a total brat sometimes, but she also punches me in the gut and shoulders anytime I don't give her exactly what she wants. I told her nicely to stop, I have been for months. All she does is stick her tongue out and smile. I have tried breaking it off, telling her that I can't be her friend anymore. She did the same thing, stuck her tongue out and smiled, not really caring that she was hurting me. I told my Mom, and she suggested ideas, from which I tried, but nothing works. I am getting afraid to go to school with the fact that she will be there, ready to pound me.
 She's insecure, hates talking about herself other than talking about how great she is, pretends she is perfectly perfect, never talks to guys because she knows they WON'T talk back. She goes after all the nice kids and picks on them, the same way she does me, but instead of asking for lunch money demands it because she's thier "freind" too. I am disgusted of the amount of negativity that orbits around her, and I want her out of my life, but I can't just break it off. She will still walk the halls of my school, and I would still know her angered face.
  Please help me Dear Dish-It. I'm scared.

Most people are insecure for a reason as you may well know. You need to be brave and have a civilized talk with each other. She may deny all you say,  but you can find some others on your side to help your case. A teacher or adult could also be beneficial to keep track of the conversation and make certain nothing turns into a fight. Try to make a list of happenings that took place in front of others to help your case even more. This little information is all I can offer, but I hope it helped in some small way.

Thanks, i'll try that.

Not a problem. I just like to help. If you can, let me know how it goes.

Sock her.

im not a bully but im one of the most feared and respected guy in my class

Good to know?

I think you should either talk to her about it, as ILMDGRL suggested, or just be confident and don't be her friend anymore. She's bullying you and she bullies the people around her, if she hurts you then tell a teacher.