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
The act of breaking into someone's Facebook account and editing the profile to involve potentially embarrassing or humiliating information.
by rock.star April 23, 2007
Facebook user > officially ate a pound of bacon
>user comment> i once made love in bacon grease
I hate facejacking
>user comment> i once made love in bacon grease
I hate facejacking
by jimmyjenga May 09, 2010
by rinconada November 01, 2010
When a "friend" posts something on your facebook wall that is publicly visible and is a blatant negative to you and your friends.
by The Plan Man -B 2 the Thornton September 15, 2009
To go through a friends friend list on facebook and jack friends from them. Identical to Spacejacking on Myspace, only on facebook.
by ODUB October 20, 2009