I answered first and then scrolled up (‘anything religious’ works for me too)… Tough to say, I don’t tend to read terrible books so there are few that I could use to judge people so harshly…
Best I can do is Da Vinci Code. But frankly, if she’s reasonably cute and fun and she reads actual books even that book still isn’t low IQ enough to be a deal breaker.
Now I’m trying to remember the last time I had a date with a girl who read for fun. Damn
edit: a case could be made for my Polish GF in Saudi Arabia circa 2006