Among the Cinders (1984)

A middle-aged white guy with a gray beard and mustache is the first one shown, standing outside in natural light near a riverbank. He’s average build, hairy chest, looks like a farmer or outdoors type. Next we see a younger slim brown-haired teen, early 20s maybe, athletic but not shredded, getting close-ups in the sun. The woman is also mature, gray short hair, not a MILF but experienced, wears casual clothes before getting naked. They start in a dining room — table pushed aside — then move outside where most of the action happens. The older guy eats the woman out first, she’s into it, grinding on his face. The teen jerks off watching, then gets her on her knees for a threesome blowjob. Later she rides the younger guy in doggy by the river while the older man cums on her back. Camera stays wide during sex, natural lighting, no filters. You see everything — sweat, pubes, the way she grips the grass during deep thrusts. The whole thing feels rough, unpolished, like a home video with actual chemistry.