Dr. David Linden, primary member of the Neuroscience Department, contributes an article to the magazine Aeon about touch.  In this entertaining and informative article, he discusses why certain parts of the body are more pleasurable to the touch than others. 

Sexual sensation, What makes touch on some parts of the body erotic but not others? Cutting-edge biologists are arriving at new answers, by David Linden
https://aeon.co/essays/what-explains-the-variations-in-sexual-sensation-between-us