Story I heard the other night at my hub - before I started on my PD, there was a guy that used to like to "mess" with the sups. One night, while being observed, he put a hazmat at the top of the wall. That, as we all know, is against procedure. So, the sup stops him and asks why he felt compelled to do that? His response - "Well, if this truck gets in an accident and rolls over, the hazmat will then be at the bottom of the stack - which is where you want it to be. If I put it at the bottom now and the truck gets in an accident and rolls over, then whatever is in the box may spill out and damage several other packages that are below it. Which would you prefer?"
I think I would have gotten along very well with that individual. Alas, he's a feeder driver now.