If anyone can tell us what this guy is legitimately trying to do, we'd really like to know. My best guess is that he's attempting to find the mythical All-Muscle Penta-Exercise foretold by the gods of old — it works out his arms, chest, legs, back, and also does a pretty good job on our funny bones. (just like that joke must have done for you!)
What's really shocking is that the guy doesn't give it up after falling down on the first two attempts. It must be nice to have absolutely no shame. I get self-conscious about just moving the pin up by 40 pounds.
If this thing ends up working, I will be first in line to do the Backwards Toilet-Seat Mambo.