go
Amphetamines (or speed) used recreationally by either snorting or injecting.
Hey dude this go has been cut with Ajax or something.
by Chester Grape November 13, 2005

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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."
by Spinsomelight November 05, 2013

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Go
A command given by the oldest age group of a summer camp to the second oldest age group of camp at a meal. The kids at the table belonging to the second oldest age group must touch the napkin dispenser. The last person to do so will clear the table.
Jack: Alright guys, GO!

(They all touch the napkins except for Mark, who touches the cleanex wipes)

Jack: Aw Mark, clearing!
by weusdfhjneiuds October 05, 2013

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go
adj: cool, in style or popular
Tank tops are all go this season.
by Carma429 April 09, 2009

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Something that will suffice.

It will do the job it's meant to do.
Ronan: Dude I can't believe you're shagging that rotten chic.
Sean: She goes.

Ronan: Man your car's a piece of shit.
Sean: It goes.
by Sleazy E! February 20, 2008

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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
by fashionvixon90 June 20, 2010

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go
to go on a person; meaning to Fry and/or cook a person in insults.
Used mostly in the D.C. MD Area.
Megan: I'm bout to Go on you...
Ashley: Don't go on me...
by Ashley Haynes October 26, 2007

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