Used as an alternate for defriending people off of Facebook.

action verb: The act of defriending a large group of people from one's Facebook because of a number of reasons (i.e. removing an ex, people you don't talk to any more, that random from the party last night, etc).

verb: to downsize one's Facebook friends
Tom: I decided to Facebook downsize after each school year.

Jerry: Yeah, I did some Facebook downsizing after I broke up with that whore Stacy. I didn't need her sorority Facebook stalking me anymore.
by Lord_Squeaks February 2, 2012
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Verb.
1) To delete (defriend) friends on your Facebook profile that you do not know or hardly know.
Because Bob only knows 200 of his 1,000 facebook friends, Bob decided to Downsize his Facebook.

John facebook downsized his profile and he now only has fifty friends compared to his original six hundred.
by Retgarr April 22, 2009
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