Top Definition
An individual so addicted to Facebooking that he/she spends the majority of their day devoted to the act, or, seeking means by which they can Facebook. While nearly all Face Basers eventually become unemployable due to their addiction, some are able to hold a job and maintain typical, if highly annoying, lifestyles.
I was at my uncle's funeral and my Face Baser cousin is updating his profile during the service.
by briantroy December 07, 2009

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