The floss is a popular dance in which a person repeatedly swings their arms, with clenched fists, from the back of their body to the front, on each side.

[1] The name comes from the moves themselves, which involve "a lot of fast arms and hip swings as though using a huge, invisible piece of dental floss".

[1] The earliest instance of the dance being promoted on the internet was in a 2014 clip uploaded by the YouTube channel JStuStudios, run by content creators Justin Stewart and Andrew Scites.

[2] Stewart and Scites have performed the dance in televised appearances, such as The Meredith Vieira Show.

[6][7] Flossing is featured in the 2017 video game Fortnite Battle Royale, developed and published by Epic Games, as a limited-time dance "emote" as a reward from the Battle Pass Season 2 that can be performed by the characters while playing.