The short term for 'Be Right Back' which usually means that people have told their friends via text or internet based social services that they have gone somewhere for a brief period of time which usually stand for the time of up to half an hour unless they've said that it would be longer. Although in some cases, the term of BRB can also mean that they have gone for more than 6 hours without any hint of what they are doing, which usually suggests that they are having a hard time trying to masturbate properly.
Dave - Hi Josh do you want to go online in a sec?
Josh - Yeah sure but brb, going to get some food.
Dave - OK :)
/////////////////////
8 Hours Later
/////////////////////
Josh - I'm Back
Dave - Where the hell have you been? To the other side of the planet and back?
Josh - No I went to watch about 20 movies and never mentioned it to you because I couldn't be asked telling you.
Dave - Ok :(
by Anonymous XY January 04, 2014

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Acronym for "be right back." Usually used as an easy way to dip out of lame places or conversations. It has been confirmed that this phrase has been used by popular figures such as Bob Marley, Jesus, and Amelia Earhart.
Amelia Earhart:
*Hops in plane*
"Brb!!"
*Flies into waiting horizon, never to be seen again"
by Gobblejosh January 13, 2011

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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 05, 2006

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Be Right Back.

You are online and someone sends you a IM but you dont want to talk. You say BRB, never reply again, eventually logout.
Person 1: yo lets play ball

Person 2: nahh

Person 1:WHY NOT

Person 2:...

Person 2: BRB

Person 1: ok

---30 minutes later---

Person 1: you playing or what?

---1 hour later---

Person 1: fuck this

Person 1 is offline.
by AssViolater September 10, 2010

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Something a girl says when she will aparently "be right back" (like 5-10 min), but really means she's ditching her friends for her boyfriend (1 hour-Forever!). At first you might believe... But after a while you will learn that "BRB" means she's not coming back.
If your good friend starts saying this beware... Your friend time with her is limited!
Girl: "Brb" guys!

Friends: "Okay see you tomorrow"

Girl: "No really, I'm coming back!" (leaves)

Friends: "Let's bet on it... 20 says she's not"

2 Hours later...

Friend: "Pay up!"
by Albino2.0 April 09, 2010

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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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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 17, 2011

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