In the range of things toddlers have to learn and endlessly review--why you can't put bottles with certain labels in your mouth, why you have to sit on the potty, why you can't take whatever you want in the store, why you don't hit your friends--by the time we got to why you can't drop your peas, well, I was dropping a few myself.
American Mom: Motherhood, Politics, and Humble Pie (ed. Simon and Schuster, 1995) - ISBN: 9780671535209