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11.
GTB
Short form for an insult popularized by the movie mean girls, "gap-toothed bitch".
"She's a gap-toothed bitch, a real GTB"

"She was being really rude on the phone, so I just called her a GTB and hung up"

"That GTB has got nothin' on me"
by Empress R October 31, 2007
 
1.
GTB
Gets the bitches
Natalie: "Salo hooked up with 11 girls at last nights party"
Alexis: "yee that cuz Salo gtbs.
by Drogba11 November 09, 2010
 
2.
GTB
An internet acronym which tells somebody you have "Got to Boost" on Modern Warfare 2 so you are to busy for them at the present moment.

(Similar to GTG "Got to Go")
Person 1: Hey, what's your dad like?
Person 2: No time to talk now, gtb!
by Jamal P. Rakens May 12, 2010
 
3.
gtb
go to bed
y u no gtb
by StrykerTypeRZ June 28, 2011
 
4.
GTB
"get that booty"
used to show your approval of someone getting ass.
"yo, is that your girl?? GTB bro!"

"dude, go talk to her, gtb cmon!"
by gtbgtb May 22, 2011
 
5.
GTB
GIRLS TALKIN BOUT
MINDLESS BEHAVIOR'S NEW SINGLE GIRLS TALKIN BOUT #GTB
by PRINCETON'S LUCKY PEACE SIGN October 31, 2011
 
6.
GTB
Go To Bed
Person 1- I'm so fucking tired.
Person 2- GTB.
Person 1- Alright.
by August Big Penis July 20, 2010
 
7.
GTB
Get That Butt; the act of getting butt or ass;
Bob: I'm going to hang-out with Kate
Bill: oooh, GTB bro, get that butt
Bob: I will, she's hott
by cnsknk October 18, 2010