One often comes to mind. I was about 15 doing a school presentation in a group in front of my class and all of our parents. When it was my time to talk, I literally stuttered and EVERY single word. Maybe, just maybe, I could get "or" or "and" out without a stutter. All other words were literally in scrambles. It was quite embarrassing, to say the least, but at least I didn't hear any laughter.