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

Watch Haim perform 'The Steps' live + debut new song 'I Liked An Instagram Post' with Jimmy Fallon.

| by Shahlin Graves

As the musical guest on The Tonight Show Starring Jimmy Fallon last night, Haim flawlessly performed new single 'The Steps' - from their forthcoming album 'Women In Music Pt. III' - with Rostam Batmanglij helping out on acoustic guitar.

Haim also teamed up with Fallon on a musical skit titled 'I Liked An Instagram Post'...

Watch both videos below: