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the act of using the social networking sight facebook to communicate to other people that are currently in the same residence as you (roomates, relatives, etc.),
Bob: Hey is Kristen going to clean up the kitchen after the rager that we had last night?

Jerry: Yah, she already is.

Bob: How do you know?

Jerry: because we're house-booking!
by frigg August 30, 2009
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