The Simpsons are forced to go to a ski resort to make use of the skis they bought, but never used. While Homer gets hit in the groin by moguls after [[StupidSexyFlanders being distracted by the mental image of Flanders' butt in a skintight ski suit]] and Lisa nearly gets attacked by deer, Marge ends up the one being injured when a cuckoo clock falls on her leg. While Marge is laid up in the hospital, Lisa steps in as her replacement -- and realizes that it's a lot of work in cleaning up after the slovenly Homer and Bart.

!! Tropes:

* BorrowedCatchphrase: Lisa quotes "Excellent" like Homer's boss, Mr. Burns, when Homer and Bart are convinced they have leprosy.
* {{Irony}}: Marge was the only one who refused to go outdoors while at the ski resort and she was the only Simpson to break a leg.
* MyGodWhatHaveIDone: Lisa when she discovers Homer and Bart have gotten sent to a leprosy treatment facility by the Flanderses.
* [[OnlySaneMan Only Sane Girl]]: Lisa.
* StupidSexyFlanders: TropeNamer.
* ThirdPersonPerson: Disco Stu's habit backfires while hitting on Marge.
-->'''Disco Stu:''' Disco Stu wants you to be comfortable while he does his thang.
-->'''Marge:''' Who's Disco Stu?
* TookALevelInJerkass and ArtisticLicenseBiology: Lisa using green paint and oatmeal to simulate leprosy scars (even though the skin-rotting lesions on a leper would actually be red and brown). Granted, Homer and Bart were being obnoxious, but that's a bit harsh.
* TrashOfTheTitans: The Simpson house is, once again, trashed while Marge is away (see also: "Homer Alone"[[note]]season three episode where Marge is arrested for obstructing traffic after having a nervous breakdown over being depended on too much, then, when Mayor Quimby pardons her, Marge decides to leave the family for a weekend at Rancho Relaxo[[/note]], "Marge in Chains," "$pringfield (or How I Learned to Stop Worrying and Love Legalized Gambling)," and "Bart After Dark").