You might remember NHL players making friendly bets with each other during the last World Juniors.

While it was fun to watch NHL players compete with each other in a way that didn’t involve them playing hockey, it looks like there’s a new friendly competition on the way.

On Saturday, Columbus Blue Jackets left winger Scott Hartnell challenged his former teammate and current Philadelphia Flyers captain Claude Giroux to a rather unusual competition on Twitter.

If you’re wondering what the challenge is, here’s a closer look at the original tweet.

Giroux has not yet responded to Hartnell’s challenge.

(H/T Twitter/Harsty43)