In this year's Christmas episode (and the last episode of the year 2000), the kids are snowed in thanks to a freak blizzard and Principal Skinner must call upon his skills as a drill sergeant to keep the kids in line (which doesn't work, as Bart and the others lead a revolution).

!! Tropes:
* AscendedToCarnivorism: Apparently Vietnamese elephants eat people.
* AngryFistShake: Homer does this when he refuses to leave the circus during a storm, demanding that they nourish the child within him.
-->'''Homer:''' NOURISH!
* AsLongAsItSoundsForeign: Bart shouts "di di mau" at Skinner because he's a Vietnam veteran; which is a grammatically incorrect way of saying "go faster". It's actually a ShoutOut to ''Film/TheDeerHunter''.
* BaitAndSwitch: Principal Skinner told the students they'd watch a story about [[HowTheGrinchStoleChristmas a grinchy creature that almost stole Christmas]]. Then he showed "The Christmas that Almost Wasn't but Then Was".
** Earlier in the episode, the radio announced that all school were closed, including Springfield Elementary ('''Bart:''' {{GASP}}) My Dear Watson Detective School. [[SubvertedTrope Then it mentions Springfield Elementary School]], and after Bart and Lisa cheered, it added, "...[[DoubleSubversion is open]]."
** Chief Wiggum appears to be [[YellowSnow writing his name in the snow]], then asks Lou to shake out the last few drops. It turns out Wiggum was using coffee he was pouring from a Thermos.
** Marge seeing the flexible female acrobats gives her ideas, making us think she's referring to sexual positions...but then when her thinking of using contortion skills to clean.
* BriefAccentImitation: Lisa and Homer briefly speak in a French accent at the beginning:
-->'''Marge:''' Ready for the circus, Homer?\\
'''Homer:''' Circus?\\
'''Lisa:''' ''Le Cirque de Pureé''. We've had tickets since ''Septembre''.\\
'''Homer:''' But I want to watch Brett ''Favre''.
* CallBack: When Ned tries to remind Homer of his Mr. Plow business, Homer responds, "I think I know my own life, Ned." This is a call back to a similar remark he made in "[[Recap/TheSimpsonsS10E19MomAndPopArt Mom and Pop Art]]", when he screws up a ContinuityNod to "[[Recap/TheSimpsonsS2E18BrushWithGreatness Brush with Greatness]]".
* ContinuityNod: Upon reading his permanent record, Bart read [[Recap/TheSimpsonsS2E1BartGetsAnF "Underachiever and proud of it?"]] and asked how old that thing was.
** Also, Flanders asks Homer whatever happened to his [[Recap/TheSimpsonsS4E9MrPlow Mr. Plow]] business (for those who don't know, an unseasonably warm winter and Komatsu Motors repossessing the plow Homer never made payments on is why Homer doesn't have his Mr. Plow business anymore), and points out that he still has the jacket (which Homer kept around because [[GeekyTurnOn Marge likes it when Homer wears it in bed]]).
* {{Contortionist}}: Marge watches some of these perform at ''Le Cirque de Pureé''.
-->'''Marge:''' Oh, look at those exotic positions! Watching those women is giving me ideas... ''(imagines herself contorting her body as she cleans the bathroom)''
* EndOfEpisodeSilliness: On the way home from rescuing the kids, the car fumes get to Homer again and he hallucinates Lisa as a camel and Bart as a harem girl.
* EpicFail: When Homer attempted to make a snow angel, he ended up making a snow devil instead (which, according to Homer, ''always'' happens).
** At one point during the movie the kids were watching, the film broke in half and the projector caught fire. Nelson then mocked Skinner, saying he should've gotten a DVD, to which Skinner replied it '''''was''''' a DVD.
* GettingCrapPastTheRadar:
** When Groundskeeper Willie has enough of Skinner, he says "You can't slap your Willie around anymore!"
** Skinner asks the hamster to "chew open my ball sack", meaning the sack for the dodgeball balls in which he is trapped.
** The aforementioned scene of Chief Wiggum writting in the snow.
* HalfwayPlotSwitch: The episode starts out with the Simpsons attending a French-Canadian circus, but then a snowstorm rolls in and blows the circus away.
* HandWave: Flanders explains his car's lack of airbags by saying "The church opposes them for some reason."
* HydrantGeyser: Homer crashes a fire hydrant on Ned's car, trapping both of them when the water freezes over.
* ImStandingRightHere: While Homer and Flanders were trying to drive to school to rescue the kids, Flanders once believed they ran over something. Homer said he hoped it was Flanders.
* LeadIn: Homer watching a football show on television.
* MushroomSamba: The fumes getting inside the car cause Homer to hallucinate that he's a sultan with a harem and a hose full of salad dressing.
* MustacheVandalism: When the kids take over the school, Milhouse decides to draw mustaches on paintings of former Presidents. He does it to portraits of UsefulNotes/WarrenHarding and UsefulNotes/WoodrowWilson but doesn't know what to do with UsefulNotes/WilliamHowardTaft, who already has a mustache.
* OhCrap[=/=]RuleOfThree: The kids shouted the first time when a snow storm got them stuck inside school; the second when they realized it'd make them miss Christmas; and the last and loudest when Principal Skinner announced his lame Christmas movie could be watched again.
* ScrewThisImOuttaHere: Not wanting anything to do with a school being open during a snow day, the teachers instead attended an "emergency caucus" (which turns out to be a day at a ski resort).
** The hamster after Principal Skinner orders him to chew through his (dodge) ball sack.
* SelfServingMemory: {{Parodied|Trope}}.
-->'''Ned:''' Hey, whatever happened to the plow from your old snowplow business?\\
'''Homer:''' I never had a snowplow business.\\
'''Ned:''' Sure you did -- Mr. Plow. You're wearing the jacket right now.\\
'''Homer:''' I think I know my own life, Ned. ''(proceeds to sing the Mr. Plow jingle)''
* SpoilerTitle: ''[[ShowWithinAShow The Christmas That Almost Wasn't But Then Was.]]''
* AStormIsComing: When the weather starts acting up, Sideshow Mel exclaims these words, adding, "I can feel it in my bone."
* WritingLines: Bart forces Skinner to write, "I ain't not a dorkus" (which Skinner calls "a grammatical nightmare").