Setting a good example for your children takes all the fun out of middle age.

Feather’s quip plays on the tension between adult desire and parental responsibility. “Middle age” is stereotypically a time of renewed appetite for pleasure—social freedom, indulgence, even mild rebellion—yet parenting imposes a second, stricter audience: one’s children. To “set a good example” means curbing impulses, modeling restraint, and living with heightened self-surveillance. The humor comes from treating moral leadership as a thief of enjoyment, while implicitly acknowledging the real power of example in shaping children’s habits. The line also satirizes the cultural expectation that parents must be consistently virtuous, suggesting that the performance of respectability can feel like a loss of spontaneity.