I did the same thing myself with a metro prop circa 2008.
I was spinning the prop after shutdown as any good effo does. The baggage handler at the rear of the ship called out asking what was being offloaded. I walked straight through the disk, was struck behind the head on the back of my neck and pinned to the ground with the blade.
It can happen in a moment of stupidity and I often think about that day.
Luckily the only thing hurt was my pride.