How can i make a bully go away?

Response to bullies: Bullies want to increase their sense of esteem at the sack of others. The solution is to be smarter at their game. Agree with their stupid remarks and add or exagerate them so that it is clear that you can laugh at yourself and in doing so reduce the effect.. This makes them feel more stupid. Eg. "you're a stupid asshole" reply: "really, i'm glad you've enlightened me. Any other insights?".

Find a buddy: Bullies tend to target people who are isolated and alone. Be sure to have a friend to do things and go places with to avoid being a target for the bully. Also tell someone in authority about the bullying behavior.

Tell someone: Find someone you trust and say something. Keeping it inside does nothing. Depending on the context, find out what resources you have at your disposal to stop the bullying. DO NOT TAKE THE LAW INTO YOUR OWN HANDS.