<Tr> <Th> Year </Th> <Td> 2010s </Td> </Tr> <P> The Floss or Flossing is a dance move in which a person swings their arms, with clenched fists, from the back to the front of their bodies on each side and do these movements repeatedly . Media outlets have commented that the dance is harder to perform than it appears . </P> <P> The name comes from the moves themselves, which involve "a lot of fast arm and hip swings, as though using a huge, invisible piece of dental floss". </P> <P> The dance became viral after Russell Horning did it during a Saturday Night Live live performance of Katy Perry's music "Swish Swish", and has since become a trend among children and teens, and has been performed by celebrities in videos . </P>

Where did the dance the floss come from
find me the text answering this question