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Pop quiz: You know it's time for NFL training camps to open because

A) The late-July heat has caused your lawn to crisp

B) ESPN is on 2017 mock draft 9.0

C) Players are bored

D) All of the above

If you answered D - give yourself a big 'ol pat on the back, you brainiac.

Let us present the greatest case that players are itching like a kid after back-woods hike to get back to action. Vikings running back Adrian Peterson, who is no stranger to dressing up for any situation, revealed a big secret to his 1.2 million fans on Twitter Wednesday evening. He is, in fact, a ninja turtle.

Yep - we're ready for NFL action to pick up again, too, AP. But thanks for the laugh.