1. 'be right back'- i'll be back soon. usually used in chatrooms or msn when the sender needs to take a huge dump but is too scared to say 'i need to do poos'.
-a polite way of letting the other person/people know that if they send messages you aren't going to respond for a bit.
-a good way to delay a conversation if you are sick of them
basil: hey wat you up to tonight?
sherryl: brb
basil: neato
by juvenileinclination November 21, 2006
BUMPY ROAD BONER
AS YOU DRIVE DOWN A BUMPY ROAD YOU START TO GET SOME RUBBING ACTION THUS CREATING A BRB. "MAN THIS ROAD SURE IS BUMPY IM GETTING A BRB". "THIS ROAD IS BUMPY NO BRB'S BACK THERE"
by BONHAM116 January 05, 2010
"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
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
i'll be right back keep waiting since i won't be gone for long
chill out brb (be right back) in a second
by samkes July 02, 2007
Bath Room Break
or
Be Right Back
Morgan223: hey nice weather we are having

Sidney445: Yeah i agree with you

Morgan223: brb

Sidney445: okay
by Entering_Kip August 18, 2006
Big Round Boobs
Wow look at her BRB's!!!
by RawrRawrRawr666 September 24, 2010
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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