As far as the original topic goes, actually, it's not something I completely oppose.
I might not swear at most people from school, but there are a few that I'd make sure to be less timid with, and to tell them not to break my balls. I've found that in most cases, sarcasm works better than rage.
But I would consider swearing at the specific people who used to bully me. I'd also consider punching them in the face.
Still, I feel like it would be more intimidating to subtly, firmly let them know that things won't go their way this time.
I think there's more strength in this than in freaking out, because if you freak out it just gives the other person the satisfaction of knowing they got to your emotions, which ironically looks weaker, unless it's actually backed up by physical power.
I'm actually not that mad about what happened anymore. I know the people who used to bully me are just ********. It's who they choose to be, and it's not something I can control, nor is it my fault. But I wouldn't allow someone to treat me that way again now that I know better about how I should have handled it.