I guess that all I can say is that I understand what he was going through. Now I’m not Jewish, but I can understand being bullied over something different about you. I have had bullies and what I have done was just speak up to them. But do to the fact that its your friends, the best option I think you have is this. Just pretend that its funny to you to and they will stop making fun of you. Part of the reason people bully others is because they know that it bothers you. They will eventually lose interest in bullying you because it isn’t “fun” to them anymore. Hang in there.