I’m not sure if you stutter or not, but most stutterers can feel when they are about to stutter on a sound or word. So, often times the mind/bodily response is to tense up before the moment of stuttering to avoid it, including the vocal cords. Then, trying to get unstuck can cause many other undesirable things, like intense eye blinking or head turning, essentially trying to push through it. so, your lion analogy actually isn’t too far off, because it does stem from intense fear!