Marge breaks her leg at a ski resort, forcing Lisa to try to take care of Homer and Bart.

!! Tropes:

* {{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.
* OurGhostsAreDifferent: The ghost of Lucille Ball comes to help Lisa deal with Bart and Homer.
* StupidSexyFlanders: TropeNamer.
* [[OnlySaneMan Only Sane Girl]]: Lisa
* 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.
** ShoutOut: Lisa quotes "Excellent" like Homer's boss, Burns.
* 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").