Traditionally the term by which one would indicate that they just got their lumber stolen, this word now refers to the event when you leave Facebook open on your computer and someone else posts something (often self-degrading, or the word "Lumberjack'd" itself) on your wall.
Traditional usage: "You just got Lumberjack'd!" (In reference to one's building materials getting stolen.)
Current Use: "You just got Lumberjack'd!" (In reference to one's dignity being stolen.)