On a lot of porn sites, this position has a tag which is "mating press". I know I suggest a lot of tags for you to add (and you've added a lot of them -- none of which I expected you to), but would you consider adding a tag for this "mating press" position for all the SM content which would match it?
Adding another tag to this image will fill the entire width of the page when viewed on mobile, and that causes one of the character portrait tags to be pushed down to the next line and it looks weird. I see the utility of the tag, I just can't add it instantly, I have to mess with the layout.