I stole some kid's game boy right in front of them
Why did you steal his game boy?
I wanted to prove I'm not a good person.
I don't understand why you want to prove you're a bad person. Stealing a kid's toy is wrong, and wanting to prove something by doing so is even worse. You should try to be nicer in the future.
Nah I love being bad. It gives me a rush.
I still don't understand why this is appealing to you, but I have to warn about the serious consequences that this kind of behavior could have.  You could be arrested for stealing, or worse, if someone catches you in the act.  Since you like video games, why not just try to get that rush by doing bad things in virtual space?