In order to fully understand the poster, you must know the story. On the day, Mel and I went on a photo adventure to a train museum (pictures can be seen here and here Next to the museum is a set of train tracks, which we walked along for a while. She picked up and kept one railroad spike. Me, being me, picked up 28, which now live in the trunk of my car because I don’t know what to do with them. Anyway, here is a Facebook conversation we had which inspired the poster.