Maîtresse du vice (1983) (Better Quality)

Starts with two slim white girls going at it on a rumpled bed — one’s a blonde with long wavy hair, the other’s a brunette with a tattoo sleeve on her left arm. They’re kissing and grinding like they’ve done this before, no awkward fumbling. Camera gets right in there for close-ups of tongues and fingers working. Next up, the brunette bends over in some patterned wallpaper bedroom, giving a good look at her ass while she plays with herself. Then the guy shows up — bald, built, in his 30s — and goes down on the brunette on a couch. Best part is the threesome on a medical-style bed: the guy’s lying back while the blonde sucks his dick and the brunette leans in to help or just watch. Lighting’s bright and clinical, so you see everything. No fluff, just solid action with girls who look like they’re actually into it.