Play Only With Me (1976)

One of the brunettes is skinnier, shorter hair, and goes at the other girl like she means it — long tongue, face buried in her pussy, the camera wide enough to catch both their faces and the way the one on bottom squirms. Then the guy shows up, dark brown hair, short, built like he lifts — not some scrawny dude, actually fills out the frame when he mounts the first girl from behind. They go from doggy to missionary, she takes it hard, legs wide, bouncing with him while the other girl watches and jerks off on the side. Later she gets her turn — he fucks her deep, both of them sweating, close-up shots on her face as she takes it, mouth open, eyes shut. Camera stays natural, no weird filters, just solid lighting from a lamp in the corner so you see everything clearly. Final scenes show the first girl alone on the bed, playing with herself while talking on the phone, like she’s not done yet.