Sunday, after a big sack on Green Bay Packers quarterback Aaron Rodgers, Detroit Lions linebacker Stephen Tulloch injured himself during his celebration dance. Check out how Tulloch crumpled to the deck after landing awkwardly on his left leg:

Today, what could have been just a slightly embarrassing moment became a nightmare: Lions head coach Jim Caldwell announced that Tulloch's 2014 season is over, as the linebacker has been diagnosed with a torn ACL, which requires season-ending surgery:

Tulloch isn't the first to injure himself on a celebration, nor is he the most legendary. That title, of course, belongs to Arizona Cardinals kicker Bill Gramatic. You may remember this epic moment:

Let this be your weekly reminder that (a) football players are dumb and (b) shit happens. Happy Monday!

[via TDdaily]