re: "Nothing ever happened"
That sounds more like an encounter with a gang than with a bully. Bullies are sadists who enjoy targeting and harrassing people. They don't usually let up. I think that persistence is what defines them as bullies, though you're welcome to disagree.
Good discussion today, but my position hasn't changed. I'm glad to see the victim of a bully retaliate. Too bad it took so long. Too bad it doesn't happen more often - it might make the world a better place. (Okay, probably not. Bullies are typically young, and too stupid to appreciate the simple truth that what goes around, usually comes around.)