How about, “What’s the worst ‘best’ book you’ve ever read — the one everyone says is so great, but you can’t figure out why?”
The "worst 'best' book" that I have ever read (at least that I can remember) has to be "Frankenstein". I just could not finish it. The writing was so heavy. I know that Shelley wrote the book in a style and manner that was popular for her time but so me it was just too much. It was like trying to learn new words for the SATs. I had to stop reading it.
But as a good note, Learn Out Loud, has a great summary of the book. It is really cool because they have a reader who reads important passages of the story that give you most of the basic information that is needed. It is read in the writers actual words so the style doesn't really change. I really felt after listening to the 22 minute audio that I had read the book myself. I even felt that I should go back and read it.