The exam I never Studied for

"I was sitting in a classroom taking an exam, but I had no idea what subject it was. Everyone around me was already writing. I looked at the first question and somehow couldn't understand any of the words. I knew I had studied, or at least I felt like I had. My pencil kept breaking. I found another one under the desk, but it was too short to hold properly. The clock seemed to be moving much faster than normal. I tried to skip a question, but the next page was blank. Suddenly I was standing in a hallway with my exam paper in my hand. Someone told me I had already failed. I wanted to argue because I hadn't even finished, but when I looked down, the paper was covered in red marks. Then I was back at the desk, and everyone had left. I woke up feeling embarrassed and strangely relieved that I didn't actually have an exam."