The bare shoulder, transmitting primeval sexual signals.
Once again I have turned to my favorite author, Desmond Morris, and his thoughts on the female body as described in his book titled, The naked woman. Why do we have shoulders in the first place? What’s been their purpose throughout our evolution? One thing’s for sure, shoulders were not meant to function in a sexual way; originally their function was as a foundation for our arms, but when our ancestors began to walk straight the shoulders became a lot more flexible, allowing us to rotate from side to side, shrug them, shake them, lift them up and down—all of which have significance in our daily communication with one another.