Titus Demetrious Young just doesn’t get it.

Despite his immature antics in the past season, Jim Schwartz and Martin Mayhew had both said that a window was still open for the wide receiver to be on the 2013 Detroit Lions roster.

That may have changed now.

Young took to Twitter today and in doing so, he may have killed his career.

 First he tweeted: ‘Like I said I never been selfish but if I'm not going to get the football i don't want to play anymore.’

 Then he added: ‘Never have I ran the wrong route, just put my self where the ball was going.’

 Young was sent home following the Nov. 18 loss to the Packers when he lined up in the wrong spots more than once. He made it look like Matthew Stafford was throwing to ghosts.

  Young didn’t make it back on the field for the rest of the season. It wasn’t a first-time offense.

  Last May he sucker-punched teammate Louis Delmas and also then was sent home for a week.

 Wide receiver Nate Burleson nailed the situation after the season when he said that with the Lions, Calvin Johnson is the man — he compared him to Michael Jackson — and the rest of the wide receivers are basically backup singers.

  Young can’t seem to get that through his skull.

  Too bad for the second-round pick.

 If he would grow up and listen to Burleson, maybe he could have resurrected his career. Instead he shot himself in the foot. Obviously he has no grasp of the situation.

  Before today, thought he had a slim chance of rejoining the Lions. Now? He must be gone.

 (Paula Pasche covers the Lions. Follow her on Twitter @PaulaPasche. Read her Lions Lowdown blog at oplions.blogspot.com.)