The artist mentions the background is an homage to the back cover of "In Utero" by Nirvana.

beautiful

I thought maybe it was a commentary about 'sex on the brain,' but I see your point. And it's not grey matter.

Oh sweet science

Yokiria said:
Oh sweet science

It's never done us wrong.

added when_you_see_it

Pardon me but see what? The internal organ background or the very noticeable fetus in the center?

Huh... took me a while to see the latter.