Walk Out

I had an hour between classes the other day. I was in the math building, and went to a computer lab--that a friend had shown me a few weeks earlier--to check my email. I was at a computer towards the middle of the room, reading through some things, when a woman came in, uncapped a dry erase marker, and said, "okay, now where did we end off last week?" Hands started raising around me as this woman wrote complicated equations on the white board and as I looked around in amazement at my managing to be right in the middle of somebody's class. It was then that I noticed a sign on the door that clearly stated open access to the lab had ended five minutes previously. I logged out of the computer, told myself it wasn't really happening, and got up and walked out.