An expression used in AIM 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.

To be gone for periods of time that could be from 5 minutes to 5 days.

An Acronym for "be right back," according to Netiquette should be used for an absence less than or equal to ten minutes, if the allotted is above that then bbiab should be used instead if you're not logging off, otherwise use bbl

brb: be right back
internet talk

1.A shortened version to signify the message "Be Right Back."
2.A lame excuse to find out lamer acronyms for brb...

"Big rhino balls". What to tell someone who doesn't know what BRB means.

The word (aka abbreviation) is the abbreviation for 'Be right back'
Also with other Abbreviation's such as Gtg, lol, lmao and so on.