It looked like that or a calf over a thigh, to me.
Our minds try to see patterns in noise; this is certainly better than noise, so it gives us more to work with, and the sense that the subject is flesh helps to misdirect a mind in the direction you called out...!
@SomeMichGuy Our minds, (especially you men's minds), lead us instinctively to see the things we're hardwired to seek. Our brains "trained" to react to certain mainly typical physical features which then will induce procreatively motivational thoughts and leading hopefully towards realization of the act of procreation. (🤭 that sounds all textbook huh?) [ TLDR: Brain sees sex everywhere in hopes to fuck. ]
@Incomplet Black-and-white sensual art Is awesome my favorite is of a woman with her back exposed. Lots of deep dark shadows with a white towel draped around her waist. No intimate areas explicitly shown But you can tell that the woman is fresh out of a bath or shower.