Nothing says "TGIF" quite like an a cappella serenade by Forever the Sickest Kids! And since it's December and all (time to break out the long undies and crappy homemade ornaments and FedEx those X-mas wishlists to the North Pole!) FTSK are rockin' out to their/our most favoritest Christmas carol ever: "Jingle Bells."

So check out the Kids' vershe of the cheesy/classic song (Guess Drake & Josh aren't the only ones lookin' for a jingle!) and give the guys props for nailing the hand choreography (it's a snap!) modeling the latest in Winter Wonderland attire (LOVE the ear flaps!) and hittin' all their happy holiday harmonies.

+ PS. This is the tamest we have EVER seen FTSK. Like, ever. So if you who like your Kids more energized/less harmonizey, check out their headbangin' Red Bull commercial, their fully costumed Halloween craziness and live mid-concert shoutout.