Wilbur and the Baby Factory (1970)

The girl’s got red hair, glasses, and a slim build — looks early 20s. She’s wearing a short dress early on, later completely naked on all fours. The guy’s black, clean-cut, wearing a fitted suit at first, then just his boxer briefs before everything comes off. They start fucking in what looks like a living room, missionary style, slow at first but then he flips her over and takes her hard from behind. Her tits bounce small but noticeable with each thrust — not big, but perky. He pulls out and cums on her ass after a deep, gagging blowjob where she takes his whole shaft down her throat. Camera stays close during the face-fucking, really captures the drool and eye contact. Lighting’s dim throughout, mostly lamps and natural light in the outdoor walking shot before the sex. No dialogue, just moans and slapping sounds during doggy. Ends with her lying on her back, legs up, getting creampie while he rubs it into her pussy with his fingers.