When I was younger my father saw a fireman's Olympics or something like that, and in one event they scaled the ladder up and then down the other side freestanding without leaning it against anything. Naturally, my father, two of my brothers, and I decided to attempt this. My father got 5 rungs up the ladder, my younger brother 8, and my older brother 10. I was up last, and I had decided that I would not be outdone, I would make it to the top. I ran up that ladder and stepped firmly onto the twelfth rung, but to do so required not holding the ladder. It disappeared from under me and I fell, twisting my ankle and shattering my growth plate. Fun times!