She's like a Milk Dud, Lis: sweet on the outside, poison on the inside.

Lisa: Don't be so hard on yourself, Bart. It's not your fault Jessica doesn't like you.
Bart: Is it my hair? My overbite? The fact that I've worn the same clothes day in, day out for the last four years?
Lisa: No, Bart. I just think you and Jessica are too different from each other to get along. She's a sweet, kind reverend's daughter and you're the devil's cabana boy

Rev. Lovejoy: Don't you ever come near my daughter again! Never have I heard such gratuitous use of the word "butt"!
Bart: But -- but -- but --