The event that happens every 2-3 months when you realize you don't like or talk to half of the people you are friends with on Facebook and systematically delete them.
Guy 1: Man I don't even remember adding half of these people

Guy 2: I guess it's time to start a Friend-o-caust
by A helpful Platypus April 7, 2011
Get the Friend-o-caust mug.