gb 

gaming slang short for game bunker, a term used to describe a party or clan for gaming.

Hey man, want to join my party?
Not right now, i'm in a gb.

gb by Philamnt June 25, 2010

GB 

Means gay boy or gay buddies; usually referred to people named alex

"man alex, you're a GB for saying that purse is pretty!"

GB by ptsoccer07 March 4, 2010

GB 

Garlic Bread. It's self explanatory

Excuse me kind waiter sir, may I order some GB?

GB by scrumpy85 July 9, 2018

GB 

"Get Blown" (G-et bl-ō-n)
originated in Genoa Kingston High School by Fuckin Fencl and the "GB Crew". Get blown means to smoke some marijuana to get high. This is often screamed through the hallways in a funny voice. Even after the originating classes graduation, the legacy still lives on.

Mike: "GB"
Alan: "blaze 'em up!"

GB by Jennuine Narcotics. March 21, 2011

GB 

Great Britain

I've got a GB sticker on my car.

GB by Captain Pedantic January 9, 2004

GB 

GB it means goodbye.

well, I had fun but GB Bob see you tomorrow.

GB by 196thdim April 16, 2019

GB 

Good Bloke. Used a lot by Australians.

"mate did you hear that kizza raised some money for charity?"
"yeah mate he's an absolute gb"

GB by somecobba April 28, 2020