[youtube http://www.youtube.com/watch?v=OVAdCKaU3vY?wmode=transparent]
For centuries there was a misconception regarding what sex looked like from the inside and how the various parts of anatomy move and bend to accommodate the act...but this was all settled once we had two people crawl inside a narrow MRI and show the scientists exactly what was going on. The video above from the people at Improbable Research tells the whole story.
With a fascination with the "sex we can't see" inventors have even created sex toys such as the Pleasure Periscope to give us additional information.
And while this might be an older piece of information for some, it is still incredibly interesting to those that may not have come come across it....INFRARED PORN! While the celebrity sex tape world made night vision a part of the sexual aesthetics of our time, Jacob Pander and Marne Lucas were playing with the mixture of sex and infrared back n 1995, appearing in their film The Operation. For more information:http://boingboing.net/2003/01/05/arttechpr0n-film-the.html