The code for the nerd smiley on Meebo. It is a really awesome image and can have multiple meanings. Those who know not of the power the :B possesses are foolish and unknowing beings.
There is no good example for :B, as it can be used in so many situations that one or two would just not exemplify it's usefulness.
by Mawlie March 7, 2009
Get the :Bmug. I'm so B- right now.
by Nicole Schultz April 30, 2008
Get the B-]mug. 
A collective of people that deflected from the normal course of life so severely, that they now live to make internet history. A collective of immature retards that's flaming skills are poor to the last degree. Boards that refuse to participate in their online charade of inanity are typically trolled by a few images of female genitalia, goatse, typical.
One day, a /b/tard wakes up, and with the feeble amount of brainpower he still has left, he musters up a thought, 'I fucked up.' It officially leads to what we like to call suicide.
by ThePlague September 16, 2008
Get the /b/mug. 
by aznerdy December 6, 2009
Get the ^^bmug.