@CNN: You may remember “planking” and the mannequin challenge. Now, the “invisible box challenge” is taking social media by storm. https://t.co/Zm9PZkvxtq https://t.co/WvjNAF9mSJ

December 5, 2017 / The Arbiter / CNN

@CNN: You may remember “planking” and the mannequin challenge. Now, the “invisible box challenge” is taking social media by storm. https://t.co/Zm9PZkvxtq https://t.co/WvjNAF9mSJ

You may remember "planking" and the mannequin challenge. Now, the "invisible box challenge" is taking social media by storm. https://t.co/Zm9PZkvxtq http://pic.twitter.com/WvjNAF9mSJ

— CNN (@CNN) December 5, 2017

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