Of all the things they can bully eachother with, and cultivate a state of constantly feeling inferior and victimized that it requires to be a nazi, wrists are a pretty good one. You probably see your own forearms, wrists, and hands more than any other body part, and there is a direct connection to make between strong chad vs weak virgin and arm muscles. Its a perfect way to make white men feel like shit constantly and sell them nazism as the cure.