G.O. 

Good one.

Used in a sarcastic manner, to emphasize a bad joke or a failing attempt at any type of humor.

Fred: "Yeah, she was an honor student."

Johnny: "YOUR MOM'S AN HONOR STUDENT!"

Fred: ".....G.O."

G.O. by Stee21 December 25, 2010

g.o. 

G.O. Short for game over when texting or short chat

Game over... finished, through, The End!, the buck stops here, ...!

U made ur last move n this relationship g.o.! gb!

game over finish finished over through done end, the end break up canceled

g.o. by fashionvixon90 June 21, 2010

G.O. 

An evil dude who appears in i ready balloon breaks.

G.O. sucks

G.O. by ANTIFAMAN2008 February 25, 2024

G.O. 

An evil dude who appears in i ready balloon breaks.

G.O. sucks

G.O. by ANTIFAMAN2008 February 25, 2024

g.o

short for "good one". used sarcastically when someone does foolish or embarrassing. often used in response to a stupid question.

"do you think willium's hit puberty yet jeff?"
"g.o... look at him"

g.o by Katrina April 15, 2005

G.O

Often used to describe a senario ...Means Game over /or Finished. Not happening and words to that effect.

Almost 24 hours in my bed. I am g.o.

This football match is g.o look at the state of the pitch.

G.O by thenamesarnold January 12, 2011

G.O

Game Observer
1. Someone who watches someone else play video games but does not partake in it.
2. Someone who usually just watches walkthroughs/let's plays for fun.
3. Someone who watches entire video game series but does not play them.

"Jill loves playing Assassin's Creed but is a G.O when it comes to battlefield."

G.O by Spinsomelight November 5, 2013