Scientists have finally got a grip on our deepest sexual desires - by looking at what people type into Google。
The findings have been published in a book called A Billion Wicked Thoughts, co-authored by Ogi Ogas and Sai Gaddam. They have examined one billion online sex-related searches from around the world to find out what users click on when no one else is looking。
Among the findings are the fact straight men prefer heavier women to thinner ones and find feet erotic. They also enjoy a wide variety of erotic images, including both elderly women and transsexuals。
Meanwhile straight women enjoy reading about and watching romances between two men, but only when the focus is on emotion and not sex。
Gay men and straight men were found to have the same favourite body parts, which in order are chests, buttocks then feet。
Information from the search also found men fantasise about group sex more than women, and picture more men than women in the action。
Straight men prefer to watch amateur porn online and domination and submission is popular among straight women and gay men. Gay men also enjoy watching straight porn. Experts think because porn is so readily available on the internet it may be helping human desire evolve as billions of men and women log-on more and more。
However, Donald Symons, an evolutionary psychologist in United States, thinks the survey does not necessarily prove people find the images arousing and they may just be searching out of curiosity. Others point out that there is no way of knowing what motivated any of the searches。