look up any word, like blumpkin:
 
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

Words related to Brb bio

afk bathroom brb fiver mider mmorpg piss ttyl urinate warcraft
 
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