This may be a little distasteful to some, but it’s been bugging me for a while.
There is a movie (or play, or TV show) in which a female character complains of her childhood at a Catholic school (or convent) in which she and the other girls were made to, ahem, orally service the nuns.
For some reason all I can think of is The Miracle Worker, but that can’t be possible. And that it might have been Jodie Foster, but that seems unlikely as well.
Do you have a more exact quote? Your post sounded as if you were trying to be coy, but it is tickling some memory for me and I think that I might be able to remember the movie if I had a closer quote to the actual dialog.
Is it possible that you’re thinking of the movie Agnes of God? It has Anne Bancroft as one of its stars, which may be why you thought about The Miracle Worker. It also stars Meg Tilly, who you may have confused with Jody Foster.