A few years back, husband and wife team John Krasiniski and Emily Blunt pranked their neighbour Jimmy Kimmel by setting up Christmas decorations inside his house. A celebrated prankster in his own right, Kimmel was not one to back down and retaliated by installing a neon insurance sign on the couple's house. And thus, a prank war was spawnedw with both factions attempting to one up each other every year around the holiday season.

Last year Jimmy struck hard by decking out the Krasinski-Blunt’s lavish estate with just about every holiday decoration out there and even hired a choir to serenade The Office star when he got home from work. This year, the actors had to come up with something big to get back at Jimmy and on last night’s Jimmy Kimmel Live!, their prank was revealed. Let’s check it out, eh?