Since murd0c hasn't replied yet, I'm fairly sure you could trick him with said trick smokes. He still lives by you, doesn't he?
As far as punishment, I really can't think of any. As long as these cigarettes don't actually harm anyone, you should be fine. Since I really only smoke when I'm too drunk to remember that I quit, I'd find it pretty damn amusing to light something up that exploded or smoked all over my face. Your best bet may be to do this somewhere very public, like a bar or club that you don't usually go to. That way, you can catch strangers, and if you get kicked out, there won't be a big loss. (I'm assuming you still live in NYC) I'd try it in the suburbs, where you're less likely to get shot.