Well, now it sounds like my son is popping his shoulder right out of the socket!!! It sounds gross! It doesn't seem to hurt him, but I am concerned it will get sore and set the stage for arthritis in the future. I suggested he might move the arm in a different way (not to stop moving it) and he gets mad and says he can't help it. I guess I should just let him alone, but I feel like I have to help. I hope you know where I am coming from as a parent. My hubby is able to ignore it no matter what our son is ticcing. I, on the other hand, am much more neurotic. Should I basically ignore this new (and old) tics?