Top Definition
A thing used by medical workers to inject needs filled with dead germs to develop antibodies in order to be "immune" to a certain illness.
Hey, I just got my Chicken pox vaccine, now I can't get it from you crackheads.
by D-Barggers October 03, 2006

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a term commonly used for an awful Day of Defeat player who will probably never get a Positive K:D or Kill to Death ratio.
With such a bad score last match, I think you deserve a new nickname, how about vaccine?
by purepwnageLOL March 24, 2008

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