Always Wear Clean Underwear: And Other Ways Parents Say I Love You by Marc Gellman

Part of being a kid is having grown-ups make you do things you hate - like eating your vegetables, taking out the garbage, and walking the dog. Then, to make matters worse, they say you can't do things are no big deal - like talking with your mouth full or wearing dirty underwear. And worst of all? You have to listen to them say it not once, not twice, but a zillion times.