Yeah, some people laugh when blind people bump into things, others make jokes about overweight people and others point and laugh at people with colostomy bags.... there is a small percentage of people who are assholes who hide their own insecurities by pointing out the flaws in others. So what? Are you going to live in fear of some insecure asshole pointing out your dis-fluency events? Living your life in fear of being judge by assholes is a choice you are making. You can choose not live in fear and treat judgemental assholes like the assholes they are. Imagine allowing your life to be ruled by assholes! What a horrible life-choice that would be.