Sweet Sweet Freedom (1976)

The scene opens with a naked muscular guy strapped into a metal sex swing, completely at the mercy of two women in nurse outfits. One is a slim black-haired woman in white scrubs, the other a blonde in glasses — both look young and know exactly how to work it. The black-haired nurse climbs on top and rides him hard on the contraption, bouncing with full control while he’s stuck, unable to do anything but take it. Then the blonde gets on her knees and gives a slow, deep blowjob, face close-up as she takes him all the way in. Later, there’s a shift — a bathroom scene where a different couple goes at it, girl sitting on a chair, guy bent over eating her out, then fucking her. Ends with more intense rough sex, lots of moaning, and the whole vibe feels clinical but nasty. The lighting stays bright, so you see every angle, especially the tight close-ups during facial expressions.