(Verb): The Act of doing promiscuous things on Facebook OR The Act of commenting/posting on many peoples walls, pictures, status's, and other things on Facebook.
John:Wow! did you see all the comments Alison left on everyones wall.
Sarah: Oh...yeah....she was slutbooking again.
Sarah: Oh...yeah....she was slutbooking again.
by Mr.Gabrielstein May 07, 2011