I love that title. I don’t care what the book is about, I just have to read it, hahahahaha
After going to Amazon to check it out, this is wht they say

Who’s Been Sleeping in Your Head: The Secret World of Sexual Fantasies by Brett Kahr

This is a lengthy and informative look at both the psychology of sexual fantasies and a compilation of common fantasies by category. It is very readable, interesting and sheds light on the unconscious processes that give rise to all kinds of sexual fantasies.

Sounds interesting to me:)