Found this tree growing on the roof of an abandoned cement factory. It was one of those cheap asphalt roofs that had become deeply cracked over the years and there were trees growing all over it---a small forest's worth. Getting up there I stepped on a rusty nail that went right through my shoe and sock but apparently didn't pierce my skin. I remembered that it happened a couple days later and asked my wife to look at the bottom of my foot but she said, "Why bother, if you'd gotten lockjaw you'd be dead by now."
Time to buy some of those skinhead boots.
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