An abbreviation for a forum called "Chatterbox" on the popular virtual anime based community called Gaia online. In the CB you can post anything from a legit discussion to "OMFG LYK GIMME YO DONATZZZ".
Person 1:"LOL GIMME SOMEMUNNIES"
Person 2:"GTFO GD and go back to the CB noob.
Further abbreviation of the well know acronym CBF (Can't Be Fucked). Common amongst Australian private school boys, where in one case widespread usage of the term led to the forming of the 'cb battalion'. Usually refers to a decision against school/social/relationship...general life committments.
rednecks are known for spilling beer one thier CB radios in order to modify them to get better range....even though it just makes them look like morons (rednecks have always been stupid, though they posses a set of values that was gone from rest of American society about 30 years ago...)