Forbidden World (1982)

A slim brunette with long dark hair is on the bed in a dimly lit bedroom, wearing nothing, sprawled out with her legs open. The camera lingers on close-ups of her fingers working her pussy, slow and wet, before cutting to another girl — short dark hair, pale skin — going down on her with her face buried deep. They switch spots in what looks like a control room or industrial space, concrete walls and glowing monitors in the background, the blonde one now on her back as the brunette rides her face. The oral is messy and loud, lots of sucking sounds and visible tongue action. Later, they’re both naked on the floor, fingers deep inside each other, swapping positions every few minutes. The lighting stays low throughout, mostly warm amber tones that make the sweat and fluids glisten.