I think I did it when I was five from the second story of my house.
and starting with "after I saw jackass i had an idea" ... Yeah, like catching a shark by sticking a huge hook through the side of your face? now THERE's an idea!!
It lets you jump off really high stuff without even feeling anything.
Well I have been looking at some bushes around the area and there is one really thick one. It kind of looks like it has thorns but if you put your hand on it it is fairly soft. The branches are all soft and green and it is about 5 square feet. If you where jeans or long pants you can just jump into it feet first and role sidways off it it and continue running in one fluid motion. It lets you jump off really high stuff without even feeling anything.What do you guys think?