La calandria (1972)

Starts with this older white guy—gray hair, bit of a belly, looks like your uncle—just talking to the camera in some old-timey living room. Then you see a slim brunette in a long nightgown checking herself out in a mirror, tits barely covered. Next shot: three girls—two brunettes, one blonde, all skinny with decent tits—crowding around the guy on a big canopy bed. One brunette’s got his dick in her mouth, another’s kissing his neck while playing with the blonde’s tits. The camera stays close enough to see spit dripping off his cock when she pulls off. Later, two of them argue with him in what looks like a kitchen, but the real action’s all in that candlelit bedroom. Lighting’s dim but you can still see everything—no shitty night vision, just warm glow on skin and fabric.