Top definition
The practice of going through your friend list on Facebook and realizing that you really do not talk to many of them or dislike many others and then begin to delete mass numbers of people that were once your "friends" on Facebook.
Ben- "Who the hell are these people? I don't even know this one and I hate that bitch. I think its time to delete them with a Facebook Genocide session"
by Dsquared23 March 23, 2009
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