LOL. I was like, WTF? Apparently it’s started from a swedish Eurodance hit, and becomes internet phenomena especially in Japan. Wikipedia link 1 and link 2. Now pretty much they make any anime characters doing the dance. Just search for ｳｯｰｳｯｰｳﾏｳﾏ in youtube. So far my fav is the video above, featuring the whole cast of Gundam 00.
Another distraction due to youtube logging issue