We already have a good idea of how Glee will celebrate the Super Bowl.

But what about a certain end-of-the-year holiday? TV Guide Magazine has the inside scoop on what's on tap for the show's upcoming Christmas episode, set to air on December 7.

The installment will reportedly center around Brittany, specifically the fact that she still believes in Santa Claus (hehe). Look for the group to do everything it can to ensure this belief remains intact, as one character will even dress as Saint Nick.

Elsewhere: Mercedes will have a green slushie thrown in her face, and more seeds of a Brittany/Artie romance will be planted. Sounds like a merry Glee-mas to us!

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.