The scene in which John Samson finally gets underway on his primary mission of using his biological weapon in the culture war is written as close to straight-up bonehead porn as I normally get: a sequence of what Alex in A Clockwork Orange would have called “the old in-out.”
I did have one twist, in Noreen’s use of simple exercise equipment for doing an athletic variant on intercourse in the reverse cowgirl position, a commentary on the erotic inspiration provided by athletes and their abilities.
Does the inspiration have a visual component? But of course! Here is a very recent example:
From a site called Nude Sports Blog, the existence of which should surprise exactly no one, I should think.
But probably a more direct inspiration was this erotic watercolor by “Stika.” You can click through for a larger image.