Can I  secretly drug my boss for a week hoping to counteract his descent into psychotic narcissism? It's going really well so far.
That's crazy. Why in the world would you engage in such behavior?
I'm trying to put a dent in his God complex.
I suppose I see why you might be tempted to do that, as psychotic people should be treated.  However, drugging someone without their knowledge is illegal and will most likely result in your harming the other person as well as doing some jail time.
I know. It's still awesome.
But not awesome enough to risk jail time. So stop drugging your boss and don't drug anybody else. It is too dangerous.