Yes! I block a lot and I know which words are my bad words so I've cut them out of my vocabulary altogether so that I'm mostly fluent and many of the people around me don't know I stutter and so sometimes when I have to say someones name or a phone number or something then I stutter and people tell me I'm an asshole for pretending to have a problem and "but how come you sound fine the rest of the time" but they don't actually want to sit down and have me explain it to them, they just keep on assuming I don't have a problem and it's all in my head