Flying by the seat of my pants

The first pic on my blog.....my rear end.........let me explain. We are putting steel on a house roof which was wet this morning,making traction a problem. I was attempting to walk down it when my foot saw the need to travel forward at a high rate of speed. The result is what you see plus the sore spot you can't, thank goodness. This is what happens when you fly by the seat of your pants and get caught on a screw!