If you care about your education you'll get it done. Lets face it, getting to uni is important and to do this passing exams is important. Once you're at uni you'll have plenty of time to go out at the weekend (and during the week most likely). Plus you have pretty much nothing to do in the summer, easter and winter breaks - when at uni you'll even be studying through them most likely (not so much summer, but then is the time for placements and fulltime summer jobs).
Man up and read the book. You havent got much time left, Im assuming you went out this weekend, didnt read the book and are now hoping people will reassure you that others wont have read it either?
An inch isnt exactly a large book.