I don't know if this is the best advice, but I think its a bad idea to try to hide or mask your eccentricities when it comes to stuttering. I've been stuttering my whole life and it hasn't been much of a problem. But when I became ashamed of my stutter, that's when it became really severe and made talking very difficult. I was ashamed of myself and I became anxious of speaking. Don't be ashamed of your eccentricities. It's just your body's way of coping and its fine. It's a part of you. Instead go to the gym and get ripped....nobody would dare mock you after that ;)