Imagine extreme bungee jumping.
And in your idea of the craziest wildest jump add having a bucket tied over your head, stuck in a chair, a man on wheel chair and getting kicked off the cliff. That's right. These guys are not just doing the conventional and already quite scary bungee jump, but instead making it horrifying with the most random alterations.
So basically if you have always considered bungee jumping as one of the things-to-do-before-i-die then either prepare to be underwhelmed by your jump or get some challenging ideas by these fearless people.