There is a very nice and intense belly-flat anal (= prone bone) in Rocco`s Russian Teen Obsession performed by Kalie:
The girl first gets a strong anal orgasm herself, than provides the same for her fucker fireing at least ten strokes it on her face like there was no tomorrow.
I seldomly like 1on1 scenes and the less if the girl is completely naked, but this is a really excellent fuck!