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3. Facebo
A compound of the word PLACEBO, and the first six letters of the word FACEBOOK
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
George:I got a friend request from Gennifer, but I didn't accept her because she is such a FLACEBO.

Fred: I hear you! outside of Facebook, she never says a word to me.
1. facebo
(fuh see bo) n., (pl. -bos,-boes)

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
Instead of going out, they prefer to stay at home and hang with their facebos.
2. Facebo
The false euphoric feeling of awesomeness that one gets when a lot of people like their status on Facebook.
Tracy thought she was so cool for her last status, until she figured out it was just Facebo.
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