Facebook Jack 

Occurs when one poor soul leaves a Facebook account open on a public computer, or any computer for that matter, and gets statuses, pictures, sexual orientation, friends, groups, videos, applications, and all other aspects fucked completely up.

Generally used to teach valuable lessons about locking your shit up.

*Matt has been Facebook Jacked.

Molly: Matt, how drunk were you last night?
Matt: Not very, why?
Molly: You Facebook status says you "got fucked in the ass super hard without lube and you liked it."
Matt: Damnit! They Facebook Jacked me again!!
Molly: Maybe you should learn to lock your shit up.

Facebook Jack by 69isthebestnumber April 14, 2009

Facebook Jacked 

When someone leaves their Facebook logged in and another person comes along and changes their profile picture to a JackFace from the TV series LOST, leaving them in utter humiliation.

Q- "Dude, why did your profile have that weird picture of Jack Shephard from LOST?"
A- "Oh, someone totally Facebook Jacked me."

Facebook Jacked by TRIVIAMASTERDAD February 19, 2011

facebook jackass 

That douchebag that keeps commenting on your and your friends' statuses and keeps joining wall conversations when clearly not wanted around. Hardly anyone ever responds to any of his posts, ever, regardless of whether he directly asks someone a question through a comment. Usually also an annoying jackass that keeps hanging around you and your friends in real life and doesn't pick up the countless hints that no one likes him. The only reason why people ever accepted his friend requests was to not look like a jerk. Very similar to a facebook obligate friend.

Mike: Lost a bet to Steve
Mark: damn that sucks how much do you owe him
Mike: $15 :(
Matt: HAHA NOOB PWND
Mike *thinking*: god damn it, it's that freakin' facebook jackass again

facebook jackass by anonman123 April 25, 2010