50,000 B.C. (Before Clothing) (1963)

This primitive sex scene starts with two white dudes, one in his 30s with short dark hair and average build, the other in his 40s, bald and overweight, chatting in a bathroom. Then, it cuts to one of the dudes walking in the woods. The scene heats up with a white blonde woman, probably in her 20s, with a slim body, ecstatically posing outdoors. The main action happens indoors with three white women, all in their 20s, with long dark hair and slim bodies, and one white dude, also in his 20s, with short dark hair and a slim build, dancing and then fucking. The women take turns oral and riding the guy, showing off their tits and asses. The camera captures the raw, primitive action up close.