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Gas Blowback is a function equipped on weapons which operates with help of gas and shots 6 millimeter ammunition. The word "Gas Blowback" means that the slide repeats between each rounds when the weapon fires.
GBB: Gas Blowback pistol. (Soft Air Gun)
by Tompa August 06, 2006
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2
Acronym for Gay Black Bestie, a best friend who happens to be gay and black.
Hey, Cooper, I didn't know you were gay.
I guess now you are my G.B.B.

WTF does -that- mean?

It means you're my gay black bestie!

by MC World January 04, 2009
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3
get broadband

(said to annoying people on dial up who insist on downloading lossless audio files at 5kbps for days on end)
D: hey beebs, can i get some flac?
B: gbb you tosser
by david July 08, 2004
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4
Grabbed by the balls.
A: Dude, she made me watch a Walk to Remember instead of pr0n.
B: HA! Man, you've got a case of GBB!
A: Damn.
by greenchief February 01, 2006
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5
GBB Green Bottle Blue,chromatopelma cyanopubescens; a species of tarantula.
None GBB
by Person that likes stuff November 26, 2009
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6
Gaming Blue Balls.

When you get THIS FUCKING CLOSE TO BEATING THE FUCKING LEVEL BUT GODDAMNED RNGESUS MAKES YOU LOSE BEFORE YOU CAN CUM. Followed by feelings of intense rage mixed with dissappointment and either ragequit or just taking a walk.
Person 1: I WAS SO FUCKING CLOSE TO BEATING THE BOSS BUT HE KILLED ME BECAUSE (insert RNG-Based Event Here) DIDN'T HAPPEN FOR THE FOURTH FUCKING TIME IN A ROW!
Person 2: Sounds like a serious case of GBB.
by keelbeelveel March 13, 2017
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7
oh he's my gbb (gay big brother). he taught me how to bottom
by it's like saying "i love you" January 02, 2012
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