BIO 

BIO is an acronym of the phrase BITCH ITS ON!

it can also be substituted for bring it on but is slightly less effective.

girl1: i bet guys like me more than they like you!

girl2: BIO!

BIO by twentyone31 March 6, 2010

BIO 

Bring it On

John: Want to fight??
Jack: BIO.

BIO by YOYOYOYYOYOYOOYOYYO December 16, 2008

bio 

French yogurt

-...en plus, Bio de Danone est enrichi en buffyduçactif
-mMmMmMh!! mAiS C'eSt sUrToUt TrEs bOn!

bio by FrenchLascar187 February 16, 2004

bio 

wordbiohazzard/word

bio by Anonymous March 26, 2003

bio 

Used to denote an absent or deadbeat biological parent (usually male) when terms like "father" or "dad" are inappropriate due to the individual's lack of participation in the child's life.

Sophie's bio has never paid a dime of child support, and he never asks about her when I talk to him.

bio by mamacitta April 7, 2009

bio 

A backflip with a rotation
eg. A Bio 540 = a backflip also rotating through 540 degress horizontally.

''Woah, that guy just bio 540ed the mole hill''

bio by Brendan April 6, 2003

bio 

Irritant occasionally found on internet voice channels.

"Im not using ventrilo anymore, theres a right bloody bio online"

bio by DumbGrunt July 27, 2004