Aired: February 23, 2004 | Season: 15 | Episode: 13
Overview
Runtime: 23m
Directed by: Steven Dean Moore
Written by: Carolyn Omine
Guest stars: Simon Cowell
Description
When Maggie is revealed to have an IQ of 167, Lisa, who has an IQ of 159, is no longer the genius of the family, causing a rivalry between the sisters.
Season 15 Episode 12
Milhouse Doesn't Live Here Anymore
Season 15 Episode 14
The Ziff Who Came to Dinner