When someone does something on Facebook just to make a point, or have everyone else see it. Can be done by a status, or joining of a group. Usually not a direct comment or wall post.
A spin-off from the more commonly known act "drunk dialing" this occurs when a person is intoxicated, logs on to his facebook account and makes an unusually high number of comments, not limited to exes (ex-girlfriends or ex-boyfriends, whatever the case may be) but to his entire facebook friends list and sometimes his friends' facebook friends lists as well (depending on the level of intoxication). Emboldened by alcohol, he thinks every comment he's making is funnier than the last one he just made and won't stop until he experiences actual passing out (sometimes occurring mid-commenting and on his keyboard).
John: Why did Bob grab my case of PBR and close the door to his bedroom?
Mary: He's drunk facebooking tonight because he hasn't talked to his parents and friends back home in such a long time. Tomorrow his profile picture will be of a unicorn humping a hippopotamus and his status update will be a blanket apology to those he may have offended as he nurses that inevitable facebook hangover.
A person who spends most or all of their time devoted to the social networking site known as Facebook. This person is a fool, because they could be utilizing this time to do something much more productive such as raising children properly or getting off welfare.
Have you heard from Jimmy lately? No. Ever since he got hooked up with high speed internet via his next door neighbor's connection, he has been a complete Facebooking Fool. He hasn't left his house (mom's house) in over a month and said he has 2000 friends on there, but hasn't actually seen one of them in person for over 20 years.