I think you may have unearthed the hidden link behind why FtH (female to hams) are so obsessed with drawing vaginas! They paint human features on their faces to show that they were once humans before the fat took their features.  They draw vaginas to show that they were once distinguishably female before the fat buried their genitals. Both ways in which the fat attempts to don a mask, depicting what they once were, in order to camouflage itself better amongst humans.