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

Watch: Troye Sivan perform an acoustic version of 'My My My!'.

Busy promoting his new single ‘My My My!’, Troye Sivan dropped by Elvis Duran’s radio show to talk writing with his best friends, as well as perform an acoustic rendition of the song.

Watch the performance (+ interview) below…