If you're looking for something morose to comfort your Grinch-sized heart this holiday season, look no further than our list of 20 things you didn't want to know about your favorite Christmas movies. This Yuletide trivia is guaranteed to sour the season's sugary-sweet films.

1. It's a Not-So-Wonderful Lung Condition

Bedford Falls, the fictional setting of 'It's a Wonderful Life,' might look like the perfect winter wonderland, but it's actually a health hazard. Some of the fake snow used to create the postcard landscape in Frank Capra's Christmas classic was actually asbestos, according to reports

So George Bailey's new lease on life would've been short lived. 

2. Holiday Inn-famy

If you've only watched Irving Berlin's 'Holiday Inn' on network television, then you've never seen the horrendous minstrel show staged to celebrate Lincoln's birthday. Bing Crosby himself appears in blackface to sing about the Great Emancipator in an homage that has become a travesty in retrospect. That's why networks usually cut the offensive song from broadcasts nowadays.

3. White (Supremacist) Christmas

Irving Berlin doubled-down on racist pastimes in the 'Holiday Inn' sequel 'White Christmas,' which features Bing Crosby, Danny Kaye and Rosemary Clooney singing a song about how much they miss the good old days of minstrel shows. It's like an alt-right Christmas carol.

4. Bestiality on 34th Street

In a humorous — or possibly horrific — scene from the 1947 version of 'Miracle on 34th Street,' Kris Kringle (Edmund Gwenn) completes his employment card by listing his eight reindeer as his next of kin — meaning his closest living blood relatives.

Maybe Santa was just messing with HR, or perhaps he's actually half-brothers with his sleigh team, minus Rudolph, which could explain why the poor red-nosed steed was ostracized by the others.

5. Buddy the Barfing Elf

If you thought this story of a Christmas helper searching for his estranged father in 'Elf' was too sweet, you're not the only one. Will Ferrell suffered from bad headaches on set from eating all the sugary items in buddy's food pyramid. And the scene where he scarfed spaghetti soaked in maple syrup and loaded with candy had to be shot twice because Ferrell puked the first time.  

6. An X-Rated Christmas Story

The cast of Bob Clark's 'A Christmas Story' wasn't as wholesome as their characters. Scott Schwartz, the actor playing Flick (whose tongue got stuck to the flagpole in the film), went on to do adult movies in the 1990s. His roles included Agent Big Knob in 'Booby Trap.'

So you're better off remembering his this way.

7. It's a Cash-Grab, Charlie Brown

'A Charlie Brown Christmas' is about cutting through the commercialism and celebrating the root of the holiday season. Unless you watched the original broadcast, that is. When this Peanuts special first aired, the cartoon was littered with logos for sponsor the show's sponsor — Coca Cola. At one point, Linus even crashes into a Coke ad. Good grief.

8. How the Grinch Stole Jim Carrey's Sanity

Whether you love or hate Ron Howard's feature film adaptation of 'How The Grinch Stole Christmas,' there's no denying that the movie's makeup was impeccable...and traumatic. Actor Jim Carrey compared wearing all those prosthetics and layers of green yak fur to being buried alive. And to help Carrey cope with the costume, film producers had to bring on a CIA operative who trained agents in the art of withstanding torture.

9. Home(icide) Alone

The real menace on Lincoln Boulevard isn't the Wet Bandits, or Old Man Marley (aka 'The South Bend Shovel Slayer'). No, it's the homicidal eight-year-old Kevin McCallister, whose booby traps would've killed Harry and Marv at least twice over in 'Home Alone.'

10. Home Alone 2: Kevin Takes Manhattan

Kevin goes from murderer to serial killer in this festive sequel, which would've killed 6 Harrys and 11 Marvs if real people fell into the film's lethal traps. In fact, Kevin would've killed Marv four times with bricks alone.