1 definition by Blackadder ll

Top Definition
bio
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 January 15, 2005

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