Megatron mixed up his references, I think. Samus from Metroid is the one who curls up in a ball and rolls.
Aww, look at Calvin Johnson. He's having so much fun. And why wouldn't he be? He's got another 500 yards today (unofficially) and just caught a wide-open pass for a touchdown.
If Johnson wants to roll in the end zone, by all means, roll away. You earned it, buddy.
Now let's see it in reverse!
For more on the Detroit Lions, check out Pride Of Detroit, or for more news and notes from around the league, head on over to the SB Nation NFL hub.