Jimmy Kimmel Lie Detective is helping Santa figure out who's naughty or nice this Christmas.

Jimmy Kimmel Lie Detective is on the case this Christmas, helping Santa figure out who's naughty or nice. And in this video, he gets two squabbling brothers -- Fletcher, 6, and Sammy, 4 -- to kiss and make up.

But not before he gets the two boys to rat each other out, after hooking them up to a "lie detector" that amounts to little more than an upside-down metal colander, a buzzer and some cords.

Fletcher is more than happy to downplay his own behavior this year but is perfectly happy to report that his brother is a "rough boy" who tackles him too hard.

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One thing Fletcher forgot to mention? It's when he bites his little brother!

Watch as the Lie Detective gets to the bottom of it all, and then makes the two boys resolve to let bygones be bygones.

"You know what? Santa's going to really like that," the Lie Detective declares when the two finally make up, thanks to an assist from Kimmel's trusty sidekick, Guillermo, in a garish must-see Truth Fairy get-up.

What videos are helping you get into the holiday spirit? Share them with me @renelynch

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