I almost got arrested when I found out my best friend's sister almost got raped by a guy at my high school, and proceeded over to his house with a lacrosse stick. I don't think he'll ever be able to walk without a limp ever again...
No need to actually go into detail, but needless to say... He didn't press charges, and I'm one Lacrosse stick short at the moment.
I know that I should have let the police handle it, but the Twin City cops aren't the best at their job, and this dude seriously needed an ass kicking.