My daughter asked me how I managed to stay in shape.

This joke cleverly plays on the common desire to stay fit and the everyday challenge of dealing with leftovers. The initial setup leads us to expect a disciplined, perhaps even virtuous, answer about healthy habits. The humor then springs from the punchline's ironic twist, where the "secret" to staying in shape isn't about self-control or exercise, but rather a comically inefficient and slightly mischievous method of avoiding extra calories. It's the reveal of a lazy, almost wasteful, solution masquerading as a disciplined one that makes us chuckle.

The absurdity lies in the idea of actively hiding food in the freezer simply to let it expire, turning food waste into a bizarre form of dietary control. This is something many of us can relate to, even if we don't take it to such extremes. Who hasn't found a forgotten container of mystery food in the back of the freezer? The joke taps into the universal struggle with maintaining a healthy lifestyle, the temptation of extra food, and the often-unspoken reality that our "healthy habits" might sometimes involve less-than-ideal workarounds, especially when trying to set a good example for our kids. It's a humorous nod to the gap between our intentions and our actual, sometimes flawed, actions.