Think you’re a freak for thinking about freaky stuff? Nope! Even though most people don’t talk about it, fully 97 percent of us have sexual fantasies, according to Justin Lehmiller, PhD, a research fellow at The Kinsey Institute and author of a study on sexual fantasies and the book Tell Me What You Want: The Science of Sexual Desire and How It Can Help You Improve Your Sex Life. The vast majority say they fantasize somewhere between several times per week and several times per day. Really, the surprising part is that there are some people who report zero sexual fantasies.