Why don't they put this on every playground? Wouldn't every small child love this? What could possibly go wrong? And why does the video cut short before the swing breaks and they're all brutally maimed?

This is the best idea ever.

(Note: that was a joke. This is the worst idea ever. Please don't do this. If you do happen to think that this is literally the best idea ever, however, and you don't get that that was a joke, please feel free to try it. The gene pool could use some regular pruning.)