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3.
When one becomes utterly addicted to FaceBook.

Face Crack interferes with the way your brain processes chemicals that create feelings of pleasure, so you need more and more of Face Crack just to feel involved. The feeling of panic is common side effect when the Internet can’t be accessed.

People who become addicted to Face Crack will exhibit a state of dependency by checking FaceBook several times a day – The idea of not knowing your friends every thought and/or what their doing at that very minute is the main cause of addiction.
Rich: I am thinking that everyone is addicted to Face Book...

CaCa: I need it. We all need it. U need it. Just admit it dammit! I (state ur name) gotta have Face Crack – I mean FaceBook.

Dawn: You both have a problem - go read a book.
by 1975rufus March 15, 2009
 
1.
Slang term to describe FaceBook and it's addictive quality
Let's go put these pics on FaceCrack!
by Colin_69 August 29, 2007
 
2.
A popular method of social networking turned into an addiction.
"I spent 2 hours at work today on facecrack when I was supposed to be working."
by TM the great October 12, 2009
 
4.
Appropriate name for the insidious FB.
While Becky was fighting with her sister on Face Crack, the power went out.
by ToWitUntoWit February 05, 2014