This will probably be recognized only by real fans of German porn, because
it was an old VHS tape. It was a full-feature German film I saw in 1987,
and it was likely made in the early to mid 80s.
The theme is 19th century Europe. Men wear smokings throughout the movie and women wear fancy old dresses. The costumes and the set seem pretty expensive for a porno.
Here are the scenes I remember:
1) A man is fuckin his wife on a luxurious bed. A buttler/room service guy
comes in the room and serves the man a plate with gooey stuff (oatmeals?). The man pours it on the woman's pussy and starts eating it off her.
2) While a man and a woman are fucking, an old maid comes in the room and starts vacuuming around the bed. This might have been a commercial and not part of the movie's plot.
3) During a crowded party (at a restaraunt?), the guests gather in a circle
around the host and the hostess and applaud to them, while those two kiss, and then he lifts her up and penetrates her.
4) A dominatrix-type woman is making a fat man jack off while continuing to
poke him in the balls with a pointer. He eventually comes on her pussy.
5) A group of men and women gather in a room for a plain old fucking. Women lie down on their backs next to each other on a long table, and men do them while standing. The women kept yappin' with each other throughout the scene. I know, this is kind of generic.
Sorry I don't remember more specifics. It was the first porn I ever saw and
it was more than 15 years ago! I hope someone helps me ID it. Thanks!