With regards to being attracted to bookworms, aside from the extremely creepy Oedipus implications that everyone's commented on, I couldn't help but think about the father call when Chris comments that Kacey is smart and does this kinda condescending laugh while saying "She may even be smarter than me....on a few subjects."
This has always made me think that Chris can claim he wants a smart woman but his ego won't allow him to think a woman is actually more intelligent than him. I always thought he sees it as something cute, like "awww she knows astrophysics, how sweet, that'll come in handy in the kitchen!" But he claims he's attracted to smart women cos that's what society says you do, only bad people want airheads and Chris can't possibly be a bad man, he's the hero of his story.
Long story short Chris wants a dumb girl with big boobs, nothing new.