I know this may be a stretch to find this clip from the 80s since I don't know the name of either porn star nor the film, but here it goes. The chick was a squirter, which was a bigger deal then. In the scene she's getting fucked missionary on a bed hard, she keeps cummin' and near the end the guy won't pull out as she's squirting and she's convulsing all over the place and she puts up her hands at him like she's calling a "time out" because she needs a break from cummin' so hard and long and he just laughs and says no. He ends up cummin' all over her face and onto her hair, it drips off her 80s style bangs. One hell of a scene.
Anyway, that's a piece of vintage/classic/retro porn I'm always keeping my eye out for. If by any chance anyone recognizes this description and can add anything, that would be great.