Unsupervised kids always make for the best viral videos. There's no one standing over them with enough wisdom to know that firing a paintball gun into your own crotch at point blank range is a bad idea. Grown ups would just get in the way of our entertainment.
These kids also made me realize that their absence also eliminates any warnings about the potential for harm. Sure, hitting a broken TV with a softball bat might seem like the most harmless thing a kid can do, but they clearly didn't pay attention in physics class to concepts like the laws of inertia and force. So not only are their parents failing to make sure they stay out of trouble, but their teachers are failing to teach them basic scientific concepts that can prepare them for the world they are destined to enter. In other words, it's pure comedy gold for the rest of us. Who says the system doesn't work?