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

Chance The Rapper + Jeremih = 'Merry Christmas Lil' Mama' mixtape.

Just when you think you can’t possibly love Chance The Rapper any more than you already do, he goes and surprise drops a Christmas-themed mixtape[!!!] with Jeremih! This is real-life. I kid you not.

Listen to the 'Merry Christmas Lil' Mama' mixtape below...