Top Definition
Posting a status update to FB from your phone without knowing it.
My wife was walking around the mall, and she was Butt Facebooking status updates.
by Jawbonz February 19, 2010
1 more definition
The act of sitting on ones backside all day Facebooking
Were you Butt-facebooking all weekend? Yeah, me too!
by Annie Bear PBP May 23, 2011

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