how did the first people on earth know they had to have sex

[truecelitover]

he didn’t know
He just saw his throbbing rod and saw her pink slit and figured maybe he could put it inside

Cream came out of his rod then soon a human being crawled out of that same hole 9 months later

How did he know to shove it in there and not her asshole?

 

[LTNUser]

instructions left by aliens

These are Egyptian?

 

[fuxkdakikez]

instructions left by aliens

fuck this is so hot

 

[Vermilioncore]

How did he know to shove it in there and not her asshole?

Because earlier that day he saw a log of brown smelly stuff come out of that hole and was like “hmmm what’s this other hole do”

 

[optimisticzoomer]

They didn't have to

 

[The Grinch]

what made the man stick his throbbing cock into the woman’s stinky pussy? how did he know this is what he was supposed to do?

They didn’t know they "had to“, they just felt like it, because the human body is designed to have a sex drive, they acted according to their natural instincts and as a result the woman became pregnant

 

[Jattpslmogger]

Morphic fields ask yourself how does a bee know how to get honey and make it into a exact hexagon shape etc

 

[the_machinist_786]

There were no "first people" but the Y chromosomal Adam and mitochondrial Eve may have lived extremely close in timeframe, and sex is directly inherited from mammals, not something Homo Sapiens came up with