coup de main - noun
\ˌkü-də-ˈmaⁿ
Definition of coup de main : an attack that achieves complete surprise.

Watch: Billie Eilish hosting + performing on Saturday Night Live.

Billie Eilish did double duty on Saturday Night Live's season finale this past weekend, performing 'Happier Than Ever' and 'Male Fantasy' live, as well as participating in a variety of sketches (that also included cameos from Finneas and Miley Cyrus).

Watch both performances below, as well as clips from episode...