This is how society views female genitalia. They don't quite view it as a human organ in all the integrity that would insinuate. They view it kinda like an accessory to dick. It's defined in relation to dick- not defined by its own self. It's viewed as like a negative space juxtaposed to a positive object (dick). It's viewed as like the background to the main character (dick). It's not seen fully as its own thing with its own functions for its own right and its own integrity. Because of this, something interesting happens with the way people view women- we are seen both as sex objects, and as sexless objects simultaneously. This is the heart of why women aren't seen as fully human, in my opinion. Part of being human is having genitalia. Women aren't fully seen as having genitalia.