Related:

• Marge: I'm worried about the kids, Homey. Lisa's becoming very obsessive.
  This morning I caught her trying to dissect her own raincoat....
• Lisa, in this house we obey the Laws of Thermodynamics! -- H. Simpso
• When Bart & Lisa's class watch from the distance a Civil War re-enactment, someone screams, "Look!
  They're trying to learn for free!" Episode: 2F19, The PTA Disband...
• Lisa, if you don't like your job you don't strike. You just go in every day and do it really half-assed.
  That's the American way. -- Homer Simpson The PTA Disband...
• Skinner at the entrance to a historical park: Five dollars a child?
  ! Last year it was free! Woman at counter: Hmph, new ownership....
• Homer: Lousy teachers, trying to palm off our kids on us!
  Lisa: But, Dad, by striking, they're trying to effect a change in management so that they can be happier and more productive....
• Edna: Good news, people! [the other teachers cheer] I'm happy to announce that another union has joined us in a sympathy strike
  he piano tuners' Local 412! [the teachers look at one another, confused] [a piano tuner stands outside a house with an out-of-tune piano and looks smug] Ba...
• Ned: Ho, ho, this is a dilly of a pickle. Man: Oh my God.
  ..the PTA has disbanded! [jumps out a window] Ned...
• Professor Frink takes over the kindergarten class, drawing equations and free-body diagrams on the blackboard to explain the workings of one of those things that kids push which makes the balls pop.
  Frink: N'hey hey! Ahem, n'hey, so the compression and expansion of the longitudinal waves cause the erratic oscillation -- you can see it there -- of the neighboring particles....