Le ninfette ingorde (1978)

One of the girls has short dark hair and a slim frame, lying back on the bed while the guy fucks her in missionary, both of them moving slow but hard. The other girl, a blonde with long hair, climbs on after, taking over with a quick blowjob before riding him facing away. Camera stays wide for most of it, showing the full bed and the piano in the corner even though it’s not used. The lighting’s low, kind of moody, makes the whole thing look like some fucked-up art film but the sex is straightforward and dirty. They switch positions a few times — girl on top, then back to missionary, both girls taking turns sucking him between rounds. No wasted time, no talking much, just constant fucking and swapping spots like they’re racing to finish first.