How Billie Eilish performed upside down on SNL

With a little bit of TV trickery, Billie Eilish was able to perform her hit "bad guy" upside down on Saturday Night Live.

This behind-the-scenes video shows how it was done:

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Get a behind-the-scenes look at “Bad Guy” in our latest #CreatingSNL!

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Duh.

Ms. Eilish isn't the only talent to perform upside down live on SNL. You may remember that Penn & Teller did it first in 1986.