Video captures boy doing Flossing dance with TSA agent

The dance move is now a global phenomenon from Sweden to New Orleans.
1:22 | 06/05/18

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Transcript for Video captures boy doing Flossing dance with TSA agent
ask your doctor about once-weekly truly. Falonight here, America . The dce move made popular months ago, but tonight, the 7-year-old and his unlikely dance partner who mastered it. The dance move flossing M famous by backpack kid, Russell horning on "Snl," Katy Perry had fo him. Katy Perry actually saw, like, on Instagram, S was just scrollingund. Ef was like, hey, thisid hme good vibes. I'm going to try T get H onto the show with me. Reporter: Flossing is now a global nomil, from a factin Swede on the a football field in New Orleans, to Kelly and Ryan. But you'd be hard pre to cuter version than this one. 7-yearld prest Richards from St. Lucie. Turnout, HD found a dance partner ohe below, an office with the TSA. At TSA agent was on his W to break, but decided he'd give Preston his all. And it turns out Preston was already on a high. His mother telling ustonigh just a short time before that, he won a dance competition. And tonight, Preston telling U what it was like in that other dance-off with the TSA. I felt excited, overwheld that he was doing it with me Reportendt, prn, you've made es you have and so has that ts officer, danced right alwiyou. I'm David Muir. I hope to S you R back here tomorrow.

This transcript has been automatically generated and may not be 100% accurate.

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