Rugby stars are stripping down to their underwear on their social media accounts to raise awareness about testicular cancer.
It is a challenge thrown to them by team-mate Faf de Klerk, famous for celebrating victory against England while wearing just his pants.
He took to Twitter with his #FafChallenge campaign drive.
The campaign urges men to get “ballsy enough to check on their crown jewels” for signs of testicular cancer.
Here’s who has taken part so far…