We had a 1949 KB5. We bought a load of bales one winter and loaded them out of a hay mow onto the truck stacked 11 bales high. I climbed on top of the load when we got home and grabbed a bale and the twine broke. I fell backwards over the side. I was extremely fortunate that I landed on my feet on the hay trailer alongside the truck. Momentum carried me over the side of the trailer and I sprained my ankle when I landed on the frozen ground.
If the trailer had not been there and if I had not remained upright, I would have hit that frozen ground so hard I probably wouldn't be here today. I am top heavy and have no idea how I remained upright during the fall.