The best method would be to ignore the person as the only reason he is doing that is for attention. Once you ignore him he will not get the attention that he wants and that can make him stop. You can also focus on getting a good support system as friends can help you deal with the issue and make this stop. If the mocking is too much you should probably report this as it can be considered harassment and you can talk to your teacher about it. Visit http://www.ehow.com/how_2302842_deal-someone-mocking-you.html.