- David-Louisiana
- 09-09-2015, 11:11 PM
Optimal penis size. http://www.realclearscience.com/jour...er_109375.html
- albundy
- 09-10-2015, 01:47 AM
I guess I'm highly evolved. Who knew?
"...A larger phallus would increase friction relative to a smaller phallus. These potential complications of a larger penis suggest why the human penis has not evolved to be larger," the researchers noted.
"...A larger phallus would increase friction relative to a smaller phallus. These potential complications of a larger penis suggest why the human penis has not evolved to be larger," the researchers noted.