Chris, I saw a NG show on a primative cultures with men proving their manlihood in such a way too, but they made "bungies" from vines. The trick was to make it just long enough so they softly bounced off the dirt. Bamboo poles or branchs in a bunch provided the spring in the assembly. Sometimes accidents happened or they got too manly. Might have been the same show...but no freaking dirt dive like that video...
