Episode - 4F13\\
First Aired - 3/2/1997

Inspired by reading a series of books about ''[[TheBabySittersClub The Babysitter Twins]]'', Lisa decides to become a babysitter -- and finds that her biggest challenge is her own brother. Meanwhile, Homer and Marge check out the new outdoor mall.

!!This episode contains examples of:
* BadlyBatteredBabysitter: Lisa
* HopeSpot: Despite all of her trouble, Lisa still gets calls at the end.
* IdiotBall: Held by Homer and Marge when they think Bart will be okay with having his younger sister babysit him.
* ImagineSpot: Lisa tries to call Dr. Hibbert about Bart's condition, but then proceeds to have a spot where she would be blamed for it, therefore ruining her reputation.
* MistakenForJunkie: When a flashlight is shone in Lisa, causing her to recoil from the light, Helen Lovejoy accuses her of being on drugs.
* MistakenForPrankCall: When Bart is unconscious, Lisa tries calling 9-1-1, but they refuse to take it because Bart called earlier about "a sisterectomy, a severe case of butt rot, and a leprechaun fight."
* TookALevelInJerkass: Bart, though this is justified, as he is offended over the fact that his little sister is called to boss him around. Plus, he apologizes in the end, so it ends happily. Still, the fact that Bart acted like a jerk was the reason why this episode was panned when it premiered.