First, there was the Harlem Shake, then planking, the Kylie Jenner Challenge (that's the one where you make your lips get all puffy), the Cinnamon Challenge, the Ghost Pepper Challenge, and...  Well, you get the picture.  The latest strange internet challenge?  The Mannequin Challenge!

The Mannequin Challenge is exactly what it sounds like.  A group of people all freeze in an action pose while another person films them.  And, of course, when you upload the video you have to use the tag #MannequinChallenge

So far, there are some really good ones on the internet, and I have a feeling we are going to see them get more and more intricate as the fad rolls on.

Here are some of the best ones we've found so far...

I seriously think we need to do one of these at the office!