OK, this was back in the mid-90's...when those compilation slow-play VHS tapes were going around.
The scene was this: it was some sex addiction clinic where this superfine starlet was on a metal bed or cot in a straitjacket. She's squirming around, y'know, in a sex frenzy. A doctor in a white coat says she's hopelessly addicted to sex and the cure is a good gangbanging. Something like that. Then a bunch of dudes pull a train on her.
I'm knocking my brains out trying to THINK OF HER NAME!! She worked A LOT in the late 80's and 90's. Pretty face, pale skin with long black hair, petite with a flat stomach and small breasts. She had an awesome scratchy voice and breathed loudly. Did a lot of anal, and she was the first time I saw anal in the missionary position. Seemed in all of her anal scenes she took it like that. The scene I described above was on an all-anal VHS tape I nearly wore out.
I want to say her name was NIKKI something, and her last name is German. It's not Nikki Benz, or Nikki Fritz. I could very well be mixing them up.
All help appreciated.