Apparantly a boy did not hear about the crocodile that bit a trainers arm off a week or so back. According to the Beijing Morning Post a 9-year-old-boy was eaten by crocodiles after he and some chums (pun intended, sorry I could not resist) of his climbed over the fence into the crocodile exhibit. They threw rocks and hit the reptiles with sticks. Here is a link to an article in the Austrailia Herald Sun.
Sad and frightening story. That is a lousy way to learn a lesson.