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1.
But dialing Facebook and changing you status without knowing it.
Mike has a strange face book status- ou oh- he must have been face butting again!
by Jus Mic hot 1079 June 28, 2010
 
2.
When someone around you checks facebook on their phone so much you feel the need to grab it and fart on it.
Example - "I was at the dear camp last week and this goober kept checking his facebook page so often I snatched his phone and went all facebutting on him"
by Dear Camp Taz October 12, 2011
 
3.
The act of making posts of random letters to Facebook while your "Smart"phone is in your back pocket.
Mary Smith

eaaeismo

2 hours ago via Blackberry -Like-Comment

Oh, look, Mary's Facebutting again....
by elleffe August 17, 2011