Last month, Nigerian viral content website KRAKS TV posted this photo to its Twitter.
A few days later, Chinese TV personality Li Sisi posted a photo of her trying the challenge onto her Weibo page.
She wrote, "If you tried twisting your fingers like this after reading this post, raise your hand🙌"
Li's post got a load of people trying out the trick in the replies.
Apparently you need flexible fingers.
Some people jumped on the bandwagon and started showing off their finger-twisting prowess in other ways.
If you've been trying to twist your fingers while scrolling through this post, here are some tips.
Good luck, and please don't end up in A&E. ✊
This post was translated from Japanese.
Contact Eimi Yamamitsu at Eimi.Yamamitsu@buzzfeed.com.
Rachael Krishna is a reporter for BuzzFeed News and is based in London.
Contact Rachael Krishna at email@example.com.
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