The nerve endings in the genitals responsible for sexual sensation are a long-standing mystery in neuroscience.

“what are the nerve endings in the genitals that are responsible for sexual sensation and you know if you think about it right people can feel sexy from being touched on lots of different parts of the body but there's something special about the genitals doesn't matter male or female or interex or gay or straight or by or whatever you are you know the genitals are are a hot spot and why and you you'd think as biologists we' know this by now this would be something we could just answer but but it's been a mystery for a long time”