‘Stranger Things’ Kids Do Some Serious Demo-Dancin' on ‘The Tonight Show’ -- Watch!

STRANGER THINGS KIDS
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Finn Wolfhard, Gaten Matarazzo, Caleb McLaughlin and Noah Schnapp sure know how to 'Upside Get Down!'

The Stranger Things kids sure know how to "Upside Get Down!"

Finn Wolfhard, Gaten Matarazzo, Caleb McLaughlin and Noah Schnapp joined Jimmy Fallon for a Tonight Show dance-off on Thursday, where they busted some moves based on random dance names inspired by the juggernaut Netflix thriller.

Finally, the host and the four co-stars all got together for an epic finale, "The Upside Get Down," complete with a flipped-perspective camera and some expertly (if loosely) executed choreography.

Watch the clip below to see!

Clearly, when a party member needs assistance -- in Hawkins, Indiana, or on the dance floor -- the party comes through!

Of course, Wolfhard had some great guidance for how to bust a move. During the interview, the 14-year-old actor demonstrated a pretty hilarious Zac Efron impression from the High School Musical movies.

Stranger Things 2 is streaming on Netflix now, and recently the cast all had some helpful advice for how to binge-watch the new season!

Watch the video below for more.