This is a fragment from Fuses (1965) a self-shot, silent, 16mm film that is 18 minutes long by Carolee Schneemann.
Experimenting with collage and painting on sequences of her own images, she explores
…the intimacy of the lovemaking… And I wanted to put into that materiality of film the energies of the body, so that the film itself dissolves and recombines and is transparent and dense…
The video is NSFW