Ma mère me prostitue(1982)

Nicole Segaud has a daughter who is a keen dancer, but it seems the mother has no money, or maybe she's a hooker herself as she goes with a man in a limo out into the country where she is raped by a couple of bikers who force the man to watch. The daughter spots an advert saying 'dancing girls wanted'. Her mother takes her to the place which is a peepshow joint run be a very fat man. He explains the work required and gets the daughter to strip, which she doesn't seem to mind at all.