The Train

A few months ago, my wife and I were taking a nice walk down an old dirt road during the heat of the summer day. All of a sudden, I stopped and looked around. My wife was a little hesitant as to what I was doing. I slowly moved towards the railroad tracks ahead of us and knelt down, putting my hand on the steel. I looked both ways, sniffed my fingers, and contemplated for a few seconds. I turned and looked at my wife and told her that a train has been through here. She looked confused and asked how I knew. I told her, pointing to the railroad, "Because there are its tracks". Shaking her head, she let out a sign of disappointment as she turned her back and walked away. I giggled.