you're all fucking noobs, it means "Be ready BITCHES!"
Person A: imma touch you
Person B: quit it bitch!
A: Shut up or imma kick ur ass!
B: BRB!!!
A: Okay I'll fight you later, you ass!
B: You mathafucker it means "BE READY BITCHES"
So watch your ass
by asxddfghjkl June 4, 2011
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This term is commonly misunderstood as "Be Right Back" where one individual in an online conversation has to leave for a certain amount of time during a good conversation.

This is actually wrong though, it has a very firm meaning of "Bringing Ryne Beer" and often times is heard daily.
Person #1: "So whats up?"
Person #2: "Hold on, BRB"
Person #1: "Isn't that his 4th beer today?"
Person #2: "Yes - hold on, you know he gets cranky if I don't bring it right away"
by Joseph Blackstone February 16, 2009
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'Net chat slang, or "netiquette" for "be right back." The term does not, however, actually mean, "be right back." It is a segue euphemism for "get lost," "f*ck off," "I'm not interested in you," "never in a million years, you troll," etc. Used mainly in dating or sexually oriented chat.
Sure, I would love to meet up sometime. brb
by A. Hick November 6, 2006
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An expression used in IM (MSN, Facebook...etc) conversations. Though technically meaning "be right back", it is more commonly used as an excuse to leave a conversation with a person you don't want to talk to anymore.
Derek: Hi what's up?
Aliesha: Nothing much really...kinda bored...and I'll BRB...

Hours later:

Derek: I thought you said you would BRB...you lied!
Aliesha: No...i didn't lie
Derek: Then why did you comment on Facebook 30 mins ago??? You were still at the computer...you didn't want to talk to me...i see how it is
by aquastar8567 October 18, 2011
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An acronym some of my friends use to say "Bye"
1: brb
2: ok
.........
1 has just signed off
2: I thought so
by Felipe November 24, 2004
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Used by Dave to say he will be back in an hour or two.
"brb"

*an hour passes*

"To HELL with your brb's, Dave >_<"
by Panich October 26, 2006
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brb is an acronym for Be Right Back.
People use it in online games and chatrooms mainly, teenagers use it when they really gotta jerk off, while younger kids use it when they must eat or they parents yell at them.
randomguy: uhm, brb!
randomgirl: leaving me? :<
randomguy: juts gon.nannfnps
randomgirl: what?
*Thypical guys when they write with one hand and having some fun with the other*

randomkid: BRB, XD
randomperson: okay, we'll wait.

*4 hours later*

randomperson2: FUCK!
randomperson: Come on guys, he'll probably be back soon, just wait plz
by gromuth November 27, 2007
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