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'Superstore': Jonah and Garrett Ruin the Holiday Spirit (VIDEO)

(l-r) Colton Dunn as Garrett, Ben Feldman as Jonah in the "Christmas Eve" episode of Superstore

The holidays are around the corner, but not everyone is holly jolly.

In Tuesday's special episode of Superstore, Garrett (Colton Dunn) is Cloud 9's Santa, but things quickly go awry. In the exclusive clip below, a young boy is trying to enjoy his time with Saint Nick, when elf-for-the-day Jonah (Ben Feldman) starts a bit of a fight with his roommate.

"Would you like Santa to bring you a real gift or a passive-aggressive one?" he asks the kid.

WATCH: Cloud 9 Employees Discover a Corpse in Deadly 'Superstore' Halloween Episode

Plus, watch an exclusive clip as Amy (America Ferrera) accidentally kickstarts Jonah's (Ben Feldman) relationship with Kelly (Kelly Stables).

"Well that depends: Did you put your water glasses back in the sink, or are there a hundred of them on your nightstand," retorts Garrett.

Poor Kelly (Kelly Stables) tries to keep the peace, but the tension grows. Check out a sneak peek!

Superstore: "Christmas Eve," Tuesday, Dec. 5, 9:30/8:30c, NBC