Someone's been a naughty boy this year!

It's the first time Jess (Zooey Deschanel) will be spending Christmas with her three male roommates -- and as expected, it's anything but ordinary.

In a sneak peek from the hit FOX comedy New Girl (airing Tuesday, December 13), Schmidt (Max Greenfield) dons a sexy Santa suit, much to the chagrin of Jess, Nick (Jake Johnson), Winston (Lamorne Morris) and Paul (special guest star Justin Long).

That's not the only shocking moment in the holiday-themed episode: Paul tells Jess he loves her, which isn't something she -- or he -- expected to say so soon. How does she respond? Watch the video clip (above) to find out.

The holiday-themed episode of New Girl airs December 13 at 9 p.m. EST on FOX.