|  |  | | Let nature take it's course, eh?  Poke a monster in the eye and you will no doubt have to pay for it later, sure enough... 
 But I wouldn't say the teens were excessively stupid (excessively mean-spirited, perhaps).  Their biggest mistake was assuming that the gorilla would not be able to get out.  Hell, I've been guilty of that every time I've been to the zoo.  I mean, you go to a zoo (or an aquarium, I suppose), you usually assume that the animals are in their cages because they can't get out, not because no one has given them reason to get up and maul someone yet.
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