I've been aggressively working on Mr. Truck and yesterday I was pulling the truck to it's resting spot for the night by grabbing the front bumper and pulling backwards. As I was walking backwards, I stepped onto some cardboard that I was using as a oil drip catcher. With all the torque I was sending down to my feet, the cardboard went flying in front of me and I went crashing downward onto my butt (tail) bone. First time I've ever done this and shiiaattt! it hurts big time. Very sore.