Blue waffle is a fictitious sexually transmitted disease said to affect only women, causing severe infection and blue discoloration to the vagina. The disease has been confirmed as false. According to Dr. Elizabeth Boskey, the fictitious disease may have started around March 2010 after an image of a gentian violet stained vaginal yeast infection was circulated by the shock website Documenting Reality.
Trenton, New Jersey, councilwoman Kathy McBride fell victim to the hoax during a 2013 City Council meeting believing the disease was real.
References
Blue waffle Wikipedia(Text) CC BY-SA