A lame excuse for a definition used on Urban Dictionary for people who talk about how they need to take a shit, or how their friends leave them while online while saying they'll be back. Here's alittle tip, fuckers, people who don't already know what the acronym stands for should be burned at the stake. It's the easiest one ever. Also, if your friends get offline by seeing they'll be back, then they are not your friends, they are just retards, and most likely, at school, if they do go to school with you and you didn't meet you in a chat room and are most likely pedifiles, then they are going to say something like "I got caught up in something else," which is just underbreath speak for, "I don't like you, don't you get it you retarded monkey? I mean, you never gave me Respect Knuckles once." (I love shameless plugs). Oh, to all you other morons, nobody wants to hear about how you have to take a shit.
"And lo, the Great Omega Master hath ingested that of a bean burito and is as noisy as ever. Thus, the great foe the beans have made, for they have forsaken me with the urge to feel what is coming out of thine anus. Alas, I must BRB to once again take on my greatest nemesis, the Crapier. This will take an obscenely long time." *Signs Offline*-The Omega Master
by -The Omega Master February 08, 2005

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Big Round Boobs
Wow look at her BRB's!!!
by RawrRawrRawr666 September 24, 2010

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"Be Really Blazed" What one housemate says to other housemates when they are going to smoke weed with their dero mates and are too stupid to think up a resonable and plausable excuse to be leaving the house at 11pm
Housemate 1: BRB I'm going to play ping pong/poker/DJ.... *leaves*

Housemates 2 &3: I think he means he will Be Really Blazed when he gets home, what else could he be doing at this hour?

(3HRS LATER)

Housemate 1: *walks in* have you guys had dinner yet? I am really hungry - ping pong really takes it out of me, does anyone feel like toast?
by Frubarella September 15, 2010

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Be Reasonable, Boner

a term used when you have a boner that is making itself obvious and being unreasonable
WHOA! Shit, that chick is hot!

(Mutters):
brb brb brb brb brb brb brb
by chrisx0488 February 06, 2010

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BRB Is A Word That Lazy Idiots Who Talk To Smarter Child On MSN Messenger When They Are Gonna Take A Dump Because They Cannot Type Right Because Everyone On MSN Messenger Is A Fat Prick
SuChAcOoLUsErNaMe632:BRB dude.Gotta dump
SmarterChild:I dont understand you.
by UXD2 April 12, 2009

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"be right back" *block block block*
ill brb

*doesnt come back*
by w00t November 25, 2003

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means be right back. And what loser pays to use AOL? Damn Bizzle, you guys dumb.
brb, gotta eat crap
by ceuillez April 24, 2003

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BRB has many different defenitions
Lik
1.Bathroom Break
2.Bitch Rite Back
3.Be Right Back
& mor
sentences
1.Chat Room
LUiS15:damn I gotta take da iLL dump.BRB.damn dat waz big.
MEGAN:eww...daz HOT.LOL.
2.Other Chat Room
ERiKA:Hei.Laura.Wat r yu duin
(5 MiN. Later)
ERiKA:BRB.HOE
3.Another Chat Room
MICHELLE:Hei Jordan.
JORDAN:Hei SEXii
MICHELLE:Oh.Hold on BRB.Mi mom is calling mi
by RAiSSA February 08, 2007

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