Chalkboard: None

Couch gag: Claymation versions of the Simpsons and Gumby roll onto the couch.

Bart: A stamp museum?
Homer: (does a long Ohh!) Stamps? Those are for snail mail. (He shouts to the construction workers) Stamps rule! I mean suck.

Lenny: All right Homer! You beat those stamp nazis with good old fashion American complainin'.
Carl: Homer, if it weren't for you, we'd be at the mercy of weekend philatelists.
Lenny: You know, why didn't you just say stamp collectors?
Carl: 'Cause I'm tired of dumbing myself down for you.

Homer: I can't believe it took us 40 minutes to get here. Why can't they build a stamp museum closer to our house?
Lisa: Dad, you fought tooth and nail to get it away from our house.
Homer: Lisa, when you sustained as many blows to the head as I have, consistency is something, something that something I love you, Bart.

Marge: What a lousy party! I don't care what Apu was in a past life, in this life, he's a blabbermouth!

Lisa: I can't keep sleeping in mom and dad's room.
Bart: Yeah, if dad rolls over, you're dead.
Lisa: Mom showed me how to make a retaining wall out of pillows, but I'm gonna conquer my fears. Tonight!

Dr. Nick says he is Dr. Octopus, but he has only 6 arms.

The workers having breakfast on a steel girder are a parody on the well known photo from the age of the skyscaper building boom.

Scratchy is attending the musical Cats. Read more about the musical in the wikipedia article.

Just like the season 14 episode, The Dad Who Knew Too Little, this episode's title is either an adaptation of the 1969 film title, “The Girl Who Knew Too Much”, starring Adam West or the 1997 American comedy espionage film starring Bill Murray, “The Man Who Knew Too Little”