(verb) The act of taking a considerable amount of time in responding to each and every one of your friends birthday greetings on facebook. If you do not start on it early enough on, you face having to spend enormous periods of time in trying to sound appreciative to the masses of people who felt it right to write on your wall for such an annual celebration. It is more regarded as a personal means of thanking the countless persons who wished you a happy birthday; many people dont feel it necessary to take the time to do so and make a thankful status of their approval.
Mom: "So honey, how was your birthday yesterday?"
Son: "Rather uneventful, I spent most of the day writing on other peoples walls thanking them for their birthday wishes. I pretty much played the longest fb pick up game ever.