The Brief: Flossing, Flossin or The Floss is a dance move popularized by Backpack Kid in which a person swings their arms, with clenched fists, from side to side in front of their bodies, while stiffly rocking their hips.

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Flossing, Flossin or The Floss is a dance move in which a person swings their arms, with clenched fists, from side to side in front of their bodies, while stiffly rocking their hips.

Invented and popularized by Backpack Kid, the move was featured on SNL in Katy Perry’s performance of “Swish Swish.”

https://www.youtube.com/watch?v=xAlspsu3G44

Flossing is an emote in Destiny 2 and Fortnite.