Means “that feeling when”.

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.

“Backpack Kid” is the nickname given to teenage social media sensation Russell Horning. Famous for his dance move Flossing Backpack Kid was featured in a SNL performance with Katy Perry, and has over 2 million Instagram followers.

The Shiggy Challenge is a dance craze set to Drake’s song “In My Feelings” created by Instagram famous comedian Shiggy. #TheShiggyChallenge has gained massive notoriety quickly due to celebrities and athletes posting themselves doing the dance.