FBO

Female Birth Organism-a woman who gives birth to a child(ren) but does not display characteristics usually associated with women who are considered "nurturing mothers" These females usually resort to either neglecting or killing the children.

FBO leaves newborn infant in dumpster.

by sadperson January 13, 2008

fbo

When a couple officially announces to the world they are in a relationship....through facebook.

I can't wait to see when Phil and Vanessa make it fbo!

by omk August 6, 2008

FBO

Facebook Official - meaning you are dating someone and have changed your status to in a relationship and tagging their name along for everyone to see.

omg i didn't know they were dating now, yea she made it fbo didn't you see?

by deetn November 20, 2009

FBO

Facebook Official. The term given to those who have gone public with their relationship on Facebook. If you're not FBO, you're not that serious.

Are you guys FBO yet?

by Mishibelle January 25, 2010

FBO

Facebook official

"Did you hear about Alex and Sarah? yea it's definitely fbo that they're together"

by UNOKOZUE March 17, 2010

FBO

Fat bitches only

I like to fuck them FBO's

by Chs_mexican December 22, 2016

FBO

Full Black Out

Man that guy was so wasted last night he told me he doesn't remember anything. He was FBO!

by thisisrealthisishappening July 12, 2018