Defacebooking is sabotage of a friend’s Facebook ‘Wall’. Typical examples of defacebooking include outing the friend as a pedophile, a truant, a stealer of office supplies, a backstabber of BFFs, or a closet Mormon.
I had to un-friend Jeremy for defacebooking me! He ratted me out on my Wall for trying to poach Chase’s not quite-eighteen year old sister at Chase's party. Jeremy waited til I had just started my shift, and when I logged back on my Wall was like totally covered in flames.
To remove a 'friendship' from facebook due to having either accidentily adding him/her as a friend or actually adding them and reconsidering later.
"Yeah, there was this guy in my network who added me. I thought he looked ok, but his updates were really cramping my news feed, so I had to deface him."
"I went on a date with a girl I met a week before and like the day after our date she changed her status to 'in a relationship.' I defaced her."
Depage: a word commonly used to describe the opposite sex in a sexual context. It is a versatile word that can be used as a Noun, an Adjective or a Verb
Noun: that's good depage (Referring to an attractive member of the opposite sex).