the fiery hell-bat which will one day ascend from the depths of the inferno and swallow the souls of the iniquitous.
by looloopuff April 11, 2008
Friends Who Boned Once; that is, two or more persons who at one point had sex but are now merely friends.
One night after a party, Jack and Jill did the dirty deed. The next day they decided that they preferred to just be friends. Hence, we refer to them as fwbo's.
by looloopuff April 11, 2008