Totally get you. Had a seminar in English last december (year 2 in swedish high school), and it basically triggered the worst period of stuttering in my whole life. Had some other sources of anxiety top at that time, but the presentation was the main thing. In the end I stuttered pretty badly (at least that was my perception) but managed to get a B anyway. I’ve actually never made up excuses prior to a presentation or anything like that, but that’s mainly because my parents would know. All I want to say is, I feel you. Love from a swede in Nepal <3