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It's when someone loses it on Facebook and starts mocking the innane entries by their so-called "Facebook Friends".

Also, similar to "Suicide by Cop", it is when a Facebook participant doesn't want to simple commit Facebook Suicide themselves, but wants to piss off enough of their friends that they all de-friend them.
Kouts is going crazy, He's facebushing all his current friends and Christos X. just de-friended him!

Did you see Kouts diss Christos X. by facebushing his existence and his posts?
by www.georgenation.com July 29, 2009