Are you guys seeing different images than I am, or is this a gesture from a non-US, non-California location? I see the image with the pointer finger extended, and the thumb out to the side, with the rest of the fingers folded. (For a second I thought by "shocker" you means some lightning bolt icon, but I don't see that either.)
That's a good question. I thought it was just the link pointer, but I pointed at a link and the actual pointer only had the index finger extended. But according to Wikipedia, the actual gesture doesn't use the thumb.
(Also, I really did not need to know there was a hand gesture for that.)
It's the "pan" or "move" hand that you'll see in preview if you zoom an image and select the move tool. It's fingers are meant to be evenly spaced, but are optimized for display on pixel arrays (LCD displays).