1. Pretending to be one way on Facebook, but actually being another. 2. A person who wants to be your friend on FACEBOOK, but in real life will shun you.
Pronounced Fa See Bo
Fred: I hear you! outside of Facebook, she never says a word to me.
1 an acquaintance established solely through social networking systems that otherwise would have remained some totally unknown person somewhere on the planet
2 one of the millions you have no f***ing clue about past Farmville
3 an innocuous and superficial relationship or connection in lieu of a real one