I've had lucid dreams a few times before, and a few that got very close to being lucid. I was at my school and had to take a make-up quiz in physics. Not terribly uncommon, but things started to get odd from there. First, I remember in my dream logic that I had to take the quiz right after school ended, also not unusual, but what was strange was that the halls were completely empty. Then I get to the classroom to take the quiz and my teacher tells says to me "tuck your shirt in, you look like a slob" (we didn't have to wear a uniform, and even if we did, she wouldn't be the type to be picky about it/say something like that, especially after class). I then go to some random seat in the middle of the room and she then tells me to go to the front of the class so I won't be cheating (again, odd for her, moreso because she and I were the only ones in the class, and the were no materials around that I could use anyway). So I begin taking the quiz, but all of this is seeming a bit odd to me. I remember a friend telling me that one way to tell if you're dreaming or not is to look at a digitial clock -- if it's gibberish, you're dreaming. I look at my watch, which is both digital and analogue. The digital part read "3:19 26," which also matched up with my analogue. This was over an hour after school ended, but it wasn't gibberish so I went with it, took the quiz, left the classroom, and woke up more than a little disoriented.