Or, rather, body-doubled
Cuisses en d?lire. Early in the movie, there is a scene with Cyril Val and the two main characters. The actress is suposed to take the three of them in turns, but I think she was body doubled.
As, I think, was Cathy Stewart later, in her DP scene.
Perhaps Diane Dubois was the one who supplied. Could anyone confirm?
Le secret d'Elise. I think Ursula Gaussmann was body doubled too in her rape anal scene. By Marianne Aubert? What do you think?
Other known cases include Brigitte Lahaie in Parties fines and Je suis a prendre, and Marilyn Jess in L'initiation d'une jeune marquise (IIRR).