Mrs Tucker appears at the kitchen doorway, holding a rolled-up diaper.  `Now, don't just eat potato chips, Jimmy!  See that he eats his hamburger, dear.'  She hurries away to the bathroom.  The boy glares sullenly at the babysitter, silently daring her to carry out the order.  `How about a little of that good hamburger now, Jimmy?' she says perfunctorily.  He lets half of it drop to the floor.  The baby is silent and a man is singing a love song on the TV.  The children crunch chips.