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2.
Internet slang for "Be right back, biology break," in which "biology break" refers to going to the bathroom.
Person: BRB BIO
by eric osgood is a huge n00b August 10, 2008
11 5

Words related to Brb bio:

afk bathroom brb fiver mider mmorpg piss ttyl urinate warcraft
 
1.
A variation of the classic "brb", meant to imply that you will be back after answering nature's call.
Marcus221 says: brb bio

Legendsword says: #1 or #2???

Marcus221 says: we'll see! ;)
by josh_or_socko September 10, 2008
59 17