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

Katy Perry - 'Birthday' music video.

| by Shahlin Graves

Katy Perry has released a music video for 'Birthday' - the latest single from her 'Prism' album - during which she dons a number of disguises and goes undercover as various alter-ego party entertainers.

Watch the 'Birthday' music video below…