My how this hits close to home. ESPECIALLY in college on the first day of class. Believe me I know the look your peers gave you. One time I had to present something in one of my music classes and I could not say the word “moonlight” and I stumbled over it in front of the whole class. Everyone tells me all these techniques like just breathing and I’ve learned that my stutter is totally random and I cannot plan for it or control it. Just look up and be confident. That seems to work for me.