Nail in my tire
Three miles from home and in the dark my rear tire goes flat. As I try to remove the flat tube I can't get it out of the tire. I finally figured out that a nail had gone through the tire and was pinning the tube in the tire. Removing the nail was difficult as it was in too tightly to be pulled out with fingers. Fingernails were too weak. I was able to slide the thin crescent wrench of a CoolTool under the head of the nail and pull it out.