Got to say I thought it was very funny.
Directed straight at the cretins who were singing 'there's only 1 Sam Tomkins' after his error for the first try. Very cheeky and the best possible response!
Part of me dies every time a moronic sports fan goes mad after giving a player dogs abuse for 80 mins, then getting all morally indignant when they get it shoved back in their face. If you can't take it, don't give it!
The same thing goes for Hock's celebrations, although in saying that, throwing the ball at the fans isn't acceptable (as it wouldn't be acceptable if a fan threw something at a player.)