Despite it being one of their worst episodes, Principal and the Pauper had atleast two awesome exhanges:
Lisa: A rose by any other name would smell as sweet.
Bart: Not if you called 'em stench blossoms.
Homer: Or crapweeds.
Marge: I'd sure hate to get a dozen crapweeds for Valentine's Day. I'd rather have candy.
Homer: Not if they were called scumdrops.
Homer: Okay, once more. Where are we going?
Edna: To Capital City.
Homer: And why are you and the old lady in the car?
Agnes: We're gonna talk Armin Tamzarian into coming back.
Homer: And why is Marge here?
Marge: I came up with the idea.
Homer: And why am I here?
Marge: Because the streets of Capital City are no place for three unescorted ladies.
Homer: Why are the kids here?
Marge: Because we couldn't find Grandpa to sit for them.
Homer: And why is Grandpa here?
Grandpa: Because Jasper didn't want to come by himself!
Homer: Fair enough.