A good friend once told me all decisions could be made with a coin toss. I thought she was off her rocker untill she explained that while the coin is in the air, you will instinictually hope for one decision over another to therefor have clarify.
The best response to a narc is no response! If you must respond, show no emotion... This can be very difficult, but it will deprive him of what he wants most... A narcissistic payoff from your reaction/response.