I nearly got into a fight over that one. The parent actually seemed shocked that I would say she behaved badly. And we wonder why so many children are the way they are. That is who it's for, after all. In regard to the Purdue fountains, certain public places should be immune from litigation.
People are prone to having accidents.
Accidents are a natural part of being human. It shouldn't be. The law should allow certain places to be free of litigation, after having been approved by a select safety committee for public use. Then if someone has an accident, it is no one's fault. Play at your own risk.