These women are getting handsy — with themselves.

The weird new social media trend in China is the “reverse breast touch,” and it has young women wrapping their arm around their chests and going for a second base grab — all to prove their thinness and flexibility.

The trend started on China’s blogging site Weibo, with hundreds of thousands of users taking part in the challenge so far.

It’s similar to this summer’s bizarre #BellyButtonChallenge, which had women reaching around their waists and touching their belly button to prove they had a slim figure.

Obviously, it’s all ridiculous. But, if you’re inclined to try it yourself, you might want to at least cop a feel in private.