Go to Google.com type in "Blue waffle" and then click the "I'm feeling lucky" button.
Then you'll know what the fuck it means >.<

It appears to be an STI/STD on and in the vaginal region. This disease/infection is fictional and overly exaggerated vaginal infection (vaginitis). Images of the disease popped up on the internet on 03/18/10. The image created false concerns and misled people on the subject of vaginitis. No medical professional has provided proof for the existence of this disease/infection. The images of the disease have not yet been hosted by any medical site (legitimate). The individuals who allegedly had this ailment have not come out publicly. Which means the images were fabricated in photoshop. The images mislead uninformed, young, and naive members of the population; causing some to be too scared to engage in sexual activity. If you're 30+ and believe in this hoax...tie your tubes or get your self snipped.

The actual condition (vaginitis) causes; excessive itching, inflammation abnormal discharge, a burning sensation in the vulva. A women gets infected with vaginitis due to stress, poor diet, douching, unprotected sex, spermicidal lubricant, insufficient lubrication during intercourse, using unsanitary/unclean instruments for masturbation, or switching sexual partners within a twelve month period. This condition usually clears on its own, but antibiotics can be obtained to control the bacterial growth. It does not lead to anything resembling the fabled 'blue waffle'.

something that you should never google in your life!!!!!!!!!!!!!
it is the sickest, vilest thing you will ever see in your life!
it will scar you forever

A fuzzy diseased waffle that appears blue in color. Often mistaken for a vagina

A "waffle" is a slang term for "vagina." And a "Blue Waffle" is a slang term for a severe vaginal infection where the vagina actually becomes blue in color. Often confused with the food item blueberry waffles.

Blue waffle is a vaginal abnormality caused by severe beatings at the hand of the man-stick, excessive ferocious poundings can results in grotesque flap growth resembling a waffly versatile potato waffle but also taking on a bluey-green colour. Often covered in sweaty fur as a result of the skanky mess who owns the vagina being crap at personal hygene.. mingers

The most disgusting, nauseating, foul looking disease known to man. If you really want to fucking know, Google Images it and make sure you have a bucket near you.