1. A girl who is absolutely obsessed with yaoi, and usually shonen ai as well. Most (but not all) yaoi fangirls are into anime/manga, and can be at any age (Don't think that just because they're 13 they don't understand buttsecks!)

2. A girl who will go nuts over two extremely hot/cute guys together and is always ready to claw out some poor fellow's eyes if they disrespect their favorite pair (EX: LxLight, RikuxSora, SasuNaru, ect.)

A subcategory of fangirl.

1. A fangirl who is obsessed with yaoi

2. The female equivalent of the male unbathed fanboy

Beware of yaoi fangirl groups. If one happens to enter the vicinity of a yaoi fangirl, and one is a relatively cute looking guy, run. Run very far, and very fast. Do not look back. Do not mention certain shows with disdain around them. One will be clawed, or at the very least, never seen from again. Examples of these shows would be, Weiß kreuz, Saiyuki, and Inu Yasha. (Don't ask me about the last one, I have no idea why either).

Any anime fangirl could be a yaoi fangirl as they do look like any typical anime fangirl. In fact, if she is into anime, and considers herself a fangirl, there is a very good chance she is a yaoi fangirl. So just beware of them all.

If treaded around carefully, one will survive an encounter with a yaoi fangirl with relatively few scars...that are physical. Psychologists should be standing by.

A girl who is obsessed with the "yaoi" form of anime. Generally a loving and open person who readily *glomps* or *huggles*

Some are vicious porn frieks, but most are quite personable.

1.)girls that are rabidly obesessed with yaoi. some yaoi pairings are: sasunaru (naruto), roy/ed (FMA), kaworu/shinji (NGE), miroku/inuyasha (InY), yuki/shuichi (gravitation), and many, many more.
2.)me....*chases after shuichi**viciously glomps* >3

(yah-ō'-ē fahn-gûrl vī-rəs)
NOUN: A highly infectious, medically undetectable virus quickly becoming a pandemic amongst female anime fans. When fully fledged, the virus causes the infected to have an unhealthy, annoying infatuation with yaoi slash pairings. Common symptoms are interest in yaoi fanart, urges to write fanfics, wearing of cat ears, and glomping tendencies. It is spread either verbally or by means of the internet. It has even been known to cause death by compelling the infected to either glomp someone until their bones crack or annoy somebody to the point of suicidal intents. It is extremely important to defend yourself and your friends from the infection and influences of the virus by avoiding diseased persons at all costs and possibly wearing earplugs/masks should you ever be in the presence of a yaoi fangirl. Mental status may be altered, however, and psychological help should be sought out after contact. Those of us who are already anime fangirls are prone to catching the disease. There is no known cure.