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

Watch: Paul Mescal go undercover on social media for GQ.

Paul Mescal has teamed up with GQ for an episode of Actually Me - in which the 'Normal People' actor goes undercover on the internet and responds to comments on YouTube, Twitter, and more.

Watch the video below...