When the Automatic Door Hit Me...At School

     One day at school, I was walking through a tunnel that connects to the Campus Center. The tunnel has automatic doors that open when the handicap button is push. I was so focused on anything other than the opening and closing of said door, but out of my peripherals, I could see that the door was open. Not once did it cross my mind that the door could, I don't know, CLOSE. Right as I got into the doorway, BANG. The door smacked me and I almost fell over, book bag and all. It only made it worse that it was a busier time of day and I was walking to the campus center so I am sure a multitude of people saw. What did I do next? I did what I normally do of course and look around to see if anyone noticed what just happened, looked back at the door and acted as if it never happened. Graceful as always.