Getting even with a bitch.

All right, so here's the thing: I got into a verbally nasty argument with an ex-girlfriend of mine, and we started taking below-the-belt shots at each other. I insulted the fact that she never got over one of her exes and cries about him all the time, and she sniped me by mentioning the fact that I've cut myself before (emo fag, emo fag, I know, but whatev, the past is the past).

The point is, how do I get even with her? We both go to a small charter school of somewhere between 40-60 kids, so I need some method of revenge without jeopardizing the school atmosphere (although, if your suggestions are good enough, I might consider saying fuck-it to the school).

So, /b/, what can I do?

I'm not very savvy with the Internet, so what do you propose?