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someone who doesn't visit facebook for days, weeks, or months at a time and who, upon visiting facebook, comments on everything and anything for the next couple of hours.
jack (upon waking): ughhh, i have such a headache
jill: what happened?
jack: i'm such a facebinger. i just spent the whole night on facebook. i need a drink...
by r0ck3tm4n September 17, 2011
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