It is painful enough for a woman to know how to think about her body. Here's culture, screaming at us on the one hand to be sexy, and on the other not to be sluts. And here's nature, permeating social interaction with both desire and revulsion.
Most recent of these is the invention of various games using Skylanders Giants figures. Much has been made of how they lend themselves to real-world play, but you actually need to apply some thinking to make that work.