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

Watch: The Avengers play 'Musical Beers' with Jimmy Fallon.

Some of The Avengers - Jeremy Renner, Elizabeth Olsen, Paul Bettany and Sebastian Stan - joined Jimmy Fallon on The Tonight Show for a drinking-game version of musical chairs, a.k.a. 'Musical Beers'.

Watch the game unfold below...