The act of breaking into someone's Facebook account and editing the profile to involve potentially embarrassing or humiliating information.
by rock.star April 22, 2007
Using your friends' Facebook posts and comments to sell or promote one's own products or services. This is often in direct competition to the original poster.
Original post: "I just started a Mary Kay business! Please buy my self-tanner."
Comment: "Mary Kary is alright, but I use Avon's and it works best. Here is the link to my site..."
Original post(er): "Hey don't facejack me!"
Comment: "Mary Kary is alright, but I use Avon's and it works best. Here is the link to my site..."
Original post(er): "Hey don't facejack me!"
by pattiwordsmith March 28, 2011
v. To go on another person's social networking profile that has been left on the computer because the victim is away.
by UrbanLynx March 17, 2010
by Dr.Wurd October 31, 2010
to post your own self-promoting information on a FaceBook page under the guise of being a friend or fan.
by Joe's Black T-Shirt May 04, 2010
When someone leaves their Facebook account logged in or shares their login details with someone else at which point someone makes posts to said person's account without their knowledge.
"Bill just got facejacked. That guy gave me his login credentials for Facebook so I wrote on his wall and updated his status."
by Agent SILVERFOX February 13, 2009
by jackoffasaurous Rex June 22, 2010