The biggest one I can think of is The Catcher in the Rye. It is a good book, and if someone likes The Catcher in the Rye it means they are well-read. If someone says it is their favorite book then they probably identify with it too much and missed the point.
What are some other examples of this that you know of?
Love watching these karma-farming posts get increasingly convoluted. What’s a book where it’s a bad thing if someone likes it, but if it’s their favorite book it means they are probably a good person?