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when you sit on your phone and accidentally start posting on facebook.
Dude, what is all this nonsense on my wall? Were you Butt Booking me again?

I can't believe I Butt Booked my ex-girlfriend, now she thinks I'm stalking her.
by wisdumb2oof January 31, 2011
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The act of accidentally posting a nonsense message to Facebook by sitting on your phone.
A typical buttbooking update:

Joe Shmoe: lll,,ll,;;..
2 hours ago via Facebook for BlackBerry
by PseudoNoise July 14, 2010
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