The so-called "Blue Waffle Disease" is a new urban legend sparked by an image of a woman's bluish-tinted, scabbed vagina widely circulated on the internet. The image is thought to be Photoshopped. If it is, in fact, a real woman's vagina (not digitally altered), it is likely severely bruised as lacerated as a result of rape.
Dr. Amy Whitaker, professor of Obstetrics/Gynecology at the University of Chicago Hospital:
“There is no disease known as “blue waffle disease,” in the medical world. There is no disease that causes a blue appearance on the external genitalia. ... The common belief among medical professionals with whom I have spoken or e-mailed about this is that it is a hoax; the picture and “fake” disease used to lure people into some web site. ... There are no STDs that go only from women to men. (Really now, how would women get them?!)"