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4. Bio
An annoying way to say you're going to the bathroom, often used in WoW but has been used less frequently over the years (thankfully)
Gaydude123: Brb bio
Gayguy321: Dude just say you have to take a shit
1. bio
June 19, 2008 Urban Word of the Day
Used in many MMORPG's to indicate that you will be away to go to the restroom.
Dude1 "Hey dude, sorry, but I need to take a bio break because it feels as if I have a turtle-head poking out."
Dude2 "Dude, please, just say your going bio. I don't want a picture dude."
by Blackadder ll Jan 15, 2005 add a video
2. bio
biological waste
brb gone for bio ( a piss)
by Gitfire May 10, 2003 add a video
3. bio
Also known as a profile, BIO is short for biography and is a term used to describe a brief description of a person.
My Age is on my bio page.
by Jak Dude Apr 30, 2005 add a video
5. bio
Abbreviation of biodiesel.
My Benz runs on bio.
6. bio
A polite way of saying that you're going to the bath room.
Stands for Be In the "Office".
Guy one: "Hey man I just ate a ton of Mexican food, BIO break."
Guy two: "Dude, nasty..."
7. 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!
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