I always reply with "Watership Down" whenever someone asks me what book I'm reading and it's something embarrassing
Is it because you're really into the book?
It's the best choice! I'm into historical stuff.
It is ok to be embarrassed by somethings. You should try to be honest with people so you don't come off as a liar.
Well too bad, if they don't like it tough.
Being honest might help you connect with other people on a deeper level. Even I get embarrassed sometimes by things I am reading.