El buscón (1979)

The scene opens with a guy holding what looks like a strapon in a nearly black room — hard to see much at first. After a few seconds, the camera adjusts and you see a thick, busty brunette in her 30s wearing a white shirt, leaning forward on a surface. She’s being fucked with a strapon, the thrusts slow and deep, her ass moving with each push. One muscular guy in a green shirt appears briefly, stepping into frame from behind, then vanishes. The focus stays on her — big tits spilling out the top of her shirt, curly brown hair falling forward as she looks to the side, face serious, not smiling. They switch to reverse cowgirl for a bit, giving a solid rear angle of her thighs and ass gripping the toy. Lighting stays low throughout, almost dungeon-like, with close-ups that linger on her body but don’t show faces much. No talking, just steady fucking with a raw, private vibe.