Top definition
FBLB known as FaceBook Living Bitch is a girl or guy who lives their life through his or her boyfriend or girlfriend Facebook page he/she logs onto FaceBook just to read comments, notes, post, tags ect on her/his lovers page
Maria goes on Facebook just to read her boyfriends comments, a comment was left by Kimberley Maria confronts her boyfriends about it ,so he called her a FBLB (Facebook living Bitch)
by special cookie md November 16, 2009