A variation of the classic "brb", meant to imply that you will be back after answering nature's call.
by josh_or_socko October 26, 2008

Internet slang for "Be right back, biology break," in which "biology break" refers to going to the bathroom.
by eric osgood is a huge n00b October 6, 2008

Sarcastic expression usually used after someone links to pics involving NSFW activities. Commonly seen on vulgar IRC channels, forums, WoW perverts. BRB FAPPING stands for "Be right back, masturbating"
by nalita June 30, 2008

by ayevayday December 3, 2009

by gatebutch May 9, 2008

by tenac1ous June 17, 2009

Someone who says "be right back" in an instant messaging session and never returns, or returns hours/days later.
"You brb-liar! You've been gone for a week!"
"He's such a BRB liar. You won't hear from him again until Thursday"
"He's such a BRB liar. You won't hear from him again until Thursday"
by CoachW February 6, 2008
