I think it’s ironic that it was dad’s weight that allowed him to plug the hole, while a slimmer man would have fallen to his death.

Lisa: I think it’s ironic that it was dad’s weight that allowed him to plug the hole, while a slimmer man would have fallen to his death.
Bart: And I think it’s ironic that for once dad’s butt prevented the escape of toxic ga-
Marge: BART!