The dance move has existed for a while but Miley Cyrus doing it on YouTube helped spread the idea. By year's end, it'll be in the vocabulary of 99pc of people in the western world.
2013's version of the flashmob saw hundreds, if not thousands, of people create their own version of the original video where the assembled freak out to the Bauuer track. Check out our top 10.
ACTRESSES WITHOUT TEETH
It'll give you nightmares but it was hard to look away from this gummy horror meme this year.