Yes, I totally relate. In school, my grades were near perfect. They would have been perfect if I participated in class discussions. I new all the answers, had great ideas, but I also had my stutter. I'm funny apparently, but never make jokes because....well you know. I wonder how it would be like to speak without dreading saying certain words or just talking whenever without anxiety. For me, one of the words I freeze on is the name of my home city, my elementary school, and the words with b, r and n, such as brain.