Stephen Tulloch may never celebrate another sack after what happened during today's game against the Green Bay Packers. After taking down Aaron Rodgers, Tulloch leapt in the air to complete his intense mockery of the Packers quarterback's "Discount Double Check" celebration only to crumble to the ground and nurse his knee. The Lions linebacker was still able to walk off the field under his own power, but he has already been declared out for the remainder of the contest. Maybe something less dramatic next time, okay? 

[via Larry Brown Sports]