"I used to read a lot of novels when I was younger. I can't read most anymore, because they don't have enough information in them." This is a good one to add to the list of things not to say on a first date. And if it does somehow come up, at least have enough sense not to follow it with "I also don't read biographies/memoirs because I consider them fiction." /Don't ask
I do read some biographies/memoirs though :P