Facebook Detox 

When one goes on a "deleting spree" on Facebook, deleting any/all friends they may have added but have never spoken to.

Dude, I just did a Facebook Detox.. I deleted 400 friends from high school that I didn't even know

Facebook Detox by yodogcool January 11, 2011

facebook detox 

Loser

i.e. Someone who pretends that they have better things to do than be on facebook.

Please see Betty Cox.

Katherine could never undergo facebook detox, even though she actaully is a loser.

facebook detox by Bisky Burns March 25, 2007