"Don't fire 'til you see the whites of their eyes..."
Funny photoshopping there. Did you do it yourself, Delos? I seem to recall seeing this photo, or one like it, on the "Have you ever picked up a rattlesnake by the tail" thread a couple of weeks ago, but I might be wrong.
Seems to me that if you get a grip on a rattlesnake's neck, the pistol is sort of moot at that point. Personally, I'd be squeezing that sucker so tight his eyeballs would be popping out -- just like in the picture!
EDIT: Ooops! S&W Chad beat me to it....