Yeah, not to bust your balls, but what do you get out of this that really matters?
You were already in the penal system right? Why continue the type of behavior that got you there? A guy talked shit to you. So what. People are going to talk shit to you your whole life. You gotta let some of it go. And/or avoid situations/behavior that inspire people to talk shit to you.
Keep this up and you're just going to let assholes drag you down -- and for what? So you can have a momentary vicious pleasure that does nothing to further you as a person... does nothing to improve your quality of life. You're letting somebody else control you by reacting to their shit; you're not being proactive, you're being reactive. Do you REALLY think this guy is thinking about you right now? Do you think he cares about you at all? Why waste your precious energy? Plus, deep down, you know you are doing the wrong thing right? When people give themselves permission to do the wrong thing by justification, it ultimately causes people to think less of themselves. And makes further bad decisions easier.
When anger wins, you lose -- spiritually, morally and otherwise. Think about it. Seriously, I'm not trying to be a dick -- just hope you can see some logic in this. I want to see the best for you. (ugh, how sappy is that? lol)
Best of luck, hope you don't get caught. Hope you think about what I've said.