Shocked , Lisa asks Principal Skinner about it .
Principal Skinner confirms that Marge was very intelligent in her infancy , but this has not prevented Lisa from ending up like a stereotypical stay - at - home mother .
Shocked , Lisa asks Principal Skinner about it , and he confirms that Marge was very intelligent in her infancy , but this has not prevented her from ending up like a stereotypical stay - at - home mother .