I thought the white little kids gif was the hilarious. That baby with the stare is awesome as well. I lose.
I have done the same thing when I was a kid in those freaking haunted house things. When I was 15 and up I just warned guys by shouting to stay the hell away unless they wanted a punch.
Is it really a normal reaction for people to just attack anything and everything that startles them? What if a freaking nun just happens to sneak up silently behind you?