Prepare to go nuts.

Arriving on the heels of the ALS #IceBucketChallenge comes #FeelingNuts, a social media campaign to raise awareness for testicular cancer. Unlike the viral ALS challenge, #FeelingNuts doesn't require a donation or any cold water (thank goodness, amirite?). It just takes a photo (hopefully a SFW one) of a crotch grab to encourage men to regularly feel their testicles for any abnormalities.

See also: What the Ice Bucket Challenge Can Teach Us About Engagement

The #FeelingNuts campaign has been gaining momentum since late August, when TV host Rick Edwards tweeted out his crotch grab picture and challenged British comedian Ricky Gervais to do the same. Australian boy band 5 Seconds of Summer joined in mid-September and Hugh Jackman tweeted a picture on Wednesday, re-challenging Gervais.

The #FeelingNuts hashtag originated from the the UK-based organization Check One Two, which promotes awareness about testicular cancer. While the hashtag was their September challenge, they began promoting the campaign on YouTube as early as June.

This month's challenge to christen your man parts and name your balls. Read more in our newsletter: http://t.co/fdqGS6Yphl #feelingnuts — Check One Two (@check_one_two) September 2, 2014

Today we’re calling our balls Rom-Coms because we always want them to have a happy ending. #feelingnuts #TheyCameTogether — Check One Two (@check_one_two) September 5, 2014

The #IceBucketChallenge has raised more than $100 million for ALS research. While #FeelingNuts may not raise any money, it will hopefully cause men to feel themselves — for a good cause.