1. All that reading will destroy your eyes.
  2. You're going to spend all of your money on books and then you'll starve and you can't eat books, NOW CAN YOU.
  3. You read books *outside* of class?
  4. You read books FOR FUN? What kind of masochist are you?
  5. You're too smart for me to talk to, huh?
  6. You know, those poor trees would still be on this planet supplying us with oxygen if it weren't for you and your kind.
  7. Why waste time reading books when you could be doing other things? Important things? Like following the latest celebrity gossip.
  8. What are you, some kind of nerd?
  9. You'll have to buy a bigger house to fit all those books heh heh heh heh *guffaw*
  10. You should stick to the REAL world.
  11. Oh, I wish I had time to read.
  12. Books? Next thing you're going to tell me is that you write letters.
    Suggested by @ourweho
  13. "You would read toilet paper if it was printed on!"
    Suggested by @grumpus
  14. Why would anyone read a book that's been made into a movie, knowing you could just watch the movie? And if it's not a movie already, how good could it be?
    Suggested by @pili_ervin