In case you've been banned from using social media for a few days it's the art of... standing still.
No need to learn a new dance routine, just strike a hilarious action pose and become a moment frozen in time.
James Corden, Adele and Beyonce have already attempted the challenge and we have a feeling there are more videos to come.
Presidential nominee Hilary Clinton released her mannequin challenge today.
In the last stretch of the US elections the video urges voters not to "stand still" when they could be voting.
