My dad had stutter for less than a year, when he was younger.  My friend (not a friend actually we just know each other whatever) got it because of his father, and I have seen a lot of people with the same case.  I got stutter because of my fault (I was a fuc**ng 5 yo) I imitated a girl (with stutter I made fun of her by imitating her, not face to face) and thats how I got stutter mine is not severe, I just have blocks not ssss or s s s s s