and that's why you never mess with quiet people when they upset.
believe me you don't wanna mess up with quiet and calm people, when they're finally blow they will be the most dangerous person (my buddy hear this story from his friend from another school when the bully hospitalized).
The quietest people have the loudest minds.
On another track typically a bully commits aggressive acts to feel/show power. A quiet person will commit an aggressive act because they feel threatened. Well that's how it works among males, not sure about the dynamic among women.
Anyways what all too few people realize is that not showing resistance isn't a lack of power, its a lack of will. Push someone far enough and they will go from 0 to 100 almost instantly.