When I go to games in a "non official" capacity, I really enjoy heckling THE FANS!! I love the looks on their faces when I get to say some of the things I WANT to say on the court but cant.
"Ref the foul count is 7 -2" --- "Yeah, can't believe Team X keeps fouling, they should stop"
"Their over the back!!" --- "So?"
"Why isn't THAT A FOUL" --- "Simple, because....."
I am usually REALLY popular by the end of the game. Of course I tell them that I AM an official but I tell them I am from another association and give them a false name!!