But was it adequately constructed? All the same, they should pay. This is just another case of careless parenting. They should pay and maybe they will learn a lesson.
If it turns out this was all just a hoax, then yea. But seriously? Kids do stupid shit all the time, regardless of how good a parent you are. I know I did. Didn't you? If you don't get into a little bit of trouble, you probably shouldn't be trusted anyways.