Did The Penis Evolve For Her Pleasure?
Losing the spines and bone was an improvement. Prove me wrong.
Have you ever wondered why gorillas have such minuscule penises (3cm/1.25 in.) and large testicles while humans have larger penises (13.12cm/5.16 in.) and small testicles? Even our closest human relatives, chimpanzees and bonobos, have small penises — 8cm or 3.14 in.