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1.
KCB
Stands for "K Cool Bye". Term used by people raging, annoyed, or upset on the internet. Especially used by teenage girls.
KCB!!
by thekvmaster May 24, 2011
3 0
 
2.
KCB
An acronym standing for King Cock Block. One who has mastered the art of the cock block.
I was about to score with that hot ass blonde at the bar until KCB Rob showed up and totally undermined my Jedi mind tricks.
by wheeeeeeew September 11, 2008
4 4
 
3.
KCB
Acronym standing for Key Colony Beach, a small city near Marathon, Florida. Often used in fishing reports as a location.
"Two sailfish caught 12 miles south of KCB"
by Teh win!!1 November 10, 2006
2 2