gb 

Gravity bong. a device that concentrates marijuana smoke to a degree that leaves you stupid high after taking 1 hit.

man we had 3 heads on a nick so we had to break out the gb..

gb by p April 21, 2003

GB 

Gay Boys - a forever lasting clique of awesome guys who play madden, gamble at HP, eat el chato, and most importantly, suck dick (see word SD)

Normal person: Dude, let's go hit on some girls on main street, maybe makai or barcopa
GB2: Nah, I am going home to jerk off , play madden and sleep
GB3: Down to get on madden
Normal person: You guys are true GBs

GB by GBVB, LLC February 10, 2017

gb 

God bless

got paid today. gb

gb by bibbleb00 May 10, 2015

gb 

"gb" simply means "goodbye"
No, it doesn't mean "gay boy" and it doesn't mean "gbone". It's just an abbreviation of goodbye. so be aware that if someone writes it it's not cause it's coming out of the closet.

imma head out, gb

gb everyone!!

gb by Peter B) October 7, 2020

GB 

An abbreviation for Great Britain. Home of fish and chips, the English language and bloody brilliant swears and insults.

Woo! Yeah! Go Team GB!

GB by Diggus Bickus June 16, 2018

GB 

Taking a Gravity Bong hit or using a Gravity Bong.

"Yo, wanna come over and take some GB's?"

"I took like 1 GB out of that 2 liter and I was baked!"

"Lets go take some GB's"

GB by Random00 July 13, 2006

GB 

Abbreviation for "gang-bang"; often used in texting

That bitch just got GB'd.

GB by janedeere August 6, 2011