The Ice Bucket Challenge was the summer’s hottest social media fad. But this fall, it’s all about the balls.

Yes, you heard it right. Balls. Specifically, grabbing them with one hand, putting your other hand in the air, and having someone take a picture of it.

The campaign is called #FeelingNuts, and is designed to raise awareness for testicular cancer. Several celebrities have already gotten in on the action:

 

Who will be next? While this newest health awareness craze likely won’t catch on quite as much as the Ice Bucket Challenge (the ladies seem to be entirely excluded), prepare to start seeing it on your various newsfeeds a whole lot.

[via NY Mag]