That's what we call irony, ladies and gentlemen.
You are making a fool of yourself. First it turns out you reused code. I'm all for reusing code, but also for giving credit where credit is due. If you were upfront in saying that you reused some code, and the creators of that code are okay with it, that's fine. But then you say that you don't want your code to be reused.
If people can't use any of your code, you shouldn't use any code not written by yourself. It's that simple. You cannot claim ownership on somebody elses code like that.