Top Definition
Whenever fat people send you friend requests on facebook, most commonly fat chicks. Also usable when a fat person writes on your wall, or tags you on a status, photo, or video.
Guy 1: Gad Damn it!
Guy 2: whats's up?
Guy 1: This fat chick named carolina keeps trying to add me on facebook
Guy2: oh yeah, yeah i had the same problem with your mom, she kept fatbooking me.
Guy 1: WTF?
by NotRacistCuzMyPresidentIsBlack October 19, 2011
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