Completely didn't do the reading for Contracts/Property Thursday since my Appellate Brief (the big one) is due this weekend. Get to class, and guess who gets called on in both classes...Me, actually I got called on twice in Contracts.
It was OK though, because I am not an idiot and just had to take a quick look at my already book-briefed book for the cases in Contracts/Property (which was lucky, because while the used book has a good amount of cases book-briefed by some beautiful, considerate person I do not know, half of them have no notes at all). Nailed pretty much all the questions I got asked, and even was able to help the person next to me who was asked more about the rule in one of the cases.
Then...can't remember which class, but the teacher asked a pretty simple yes/no question, based on something he had actually just explained...and the person didn't even attempt to answer, just went, PASS, the teacher was fairly annoyed. I think it may have been the prof that doesn't even have a policy for allowing a certain # of passes.
Learn to give an answer even if you didn't do the reading, it can help a lot, I got a heavy bump up in one of my classes between my finals grade and the grade that I actually got, and I think it had a large part to do with at least making a good attempt to answer the prof's questions.