Help needed with Nina Hartley lesbian scene

I can't remember which film it was from but i remember the scene in detail. I've tried google but can't find it anywhere. Ok so in the scene Nina is doing a sexy lapdance for some naked hot chick sitting on a chair rubbing her pussy. As Nina then goes in for another lapdance the hot naked chick sticks her fingers in Nina's mouth which she sucks on and smiles. In the next scene Nina is licking the chick's pussy out. Anyone know?