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

Watch Phoebe Bridgers and Billie Eilish perform 'Motion Sickness' live together.

Phoebe Bridgers joined Billie Eilish as a special guest tonight during the second of Eilish's hometown year-ending shows at Los Angeles' Kia Forum this week.

Watch Bridgers and Eilish perform 'Motion Sickness' together live below...