Early man made weapons and babies. The first primate began to evolve about 85 million years ago, but primates didn't get the chance to flourish until a large asteroid hit Earth in what is now Mexico, about 65 million years ago. The impact killed all animals over 25 kilograms, including all dinosaurs.
The human may have been caused by a defective gene, causing a smaller jaw, leaving room for sex stories
brain growth. With no large beasts about and a larger brain and testosterone he could survive by making more of his species.
In a film tale on natives of the rain forest the time has not changed, the small tribe lived mostly under and around a large community hut. The women busied themselves with domestic work while the men sat and visited. Talking about the next hunt.
The women were bare breasted with a crotch covering of some sort and the males tied what looked like a piece of twine and a colored rag on their penis. All was casual and peaceful. Then a few men came visiting from another tribe.
Soon the men were all laughing and talking about the women of both tribes. It was decided they should have a go at each others women in sort of an exchange sexual visit. If we take this true scene and work our way backward into time, there has been little change. Huts are huts. Spears are spears and sex is sex. Man has lusted for sex forever.
If we took one of these native male babies and raised him in Chicago with proper education and all the trimmings. Some girl would find herself in private with our Chicago male who's inner workings are little changed from early man.
He has been raised civilized so he does not run around with a pretty rag and string in a bow on his penis, but he is a near duplicate of man 100,000 years ago. He has plenty of lust. His crotch tingles at the thought of having sex and it must be now. And so it is.
Prehistoric drawings show sexual antics of differing positions. Male penis carvings in ivory are also an often found artifact. Much as Lions have a pride, which is one male and a handful of female lions, it is believed early man did the same. Also this arrangement is the fashionable thing for the gorilla.