1 definition by twentyone31

Top Definition
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!
by twentyone31 March 05, 2010

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×