when you win
I don't taunt them at all--as that would bring too much attention to myself and I don't want to be remembered. However, I try to give off an aura (body language and facial expressions mostly) that says I am convinced that it is my lucky day and that I think everything I touch will turn to gold. I might have the pit overhear me telling the dealer that "I should go by a lottery ticket today" AND that "this will almost make up for the last time I played and got my ass kicked." I think it is good to be as low key as possible while still acting like a usual gambler. To be stoic after a good win would seem unnatural.
Note: I also don't like to stay after a really good win where max bets are out (but of course I never leave until the hot shoe is over).
I think the opposite is true also. If I have a really bad session and lose a lot, I try to act dejected, like I have a storm cloud over my head, as this would seem natural. Ideally, I want the pit to associate me with my loss if possible.
I think the key is to look like the typical gambler but at the same time bring as little attention as possible to a big win.
Theo