What do women think about while they're masturbating?

Simple question, maybe not so simple answers…I think that us guys tend to be more “visual” than gals while we're wanking, or more “fantasy” oriented (at least in our heads) while pulling the pud. I also think that most/many of us (guys) tend to think that women are the same…but I don't know! Would like to hear from the distaff side about what is going on in their marvelous minds while stimulating themselves to orgasm. How about it, ladies?