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1.
FGO
Skaters from Pleasanton, California.
All of whom are gay.
Rumor says that FGO stands for Flat Ground Only.
However the real defintion is a mystery.
Jon knox, Mike Abarta, and J-man are FGO's.
by Rauncy Riders July 10, 2008
 
2.
FGO
for girls ONLY
this event is FGO
by darlajo May 15, 2011
 
3.
FGO
the acronym for f*cking good one. It all began in early 2010 in the small town of Adelaide, Australia. A small group of people started showing their appreciation for awesome happenings by shouting FGO!
hey did you see avatar? "yeah man it was a FGO!!"
by vanrootnman February 21, 2010
 
4.
FGO
F=Fighters G=Gangsters O=Organist-Crime

Gang created 2007 in Sweden (FGO)
by polisen September 23, 2007