Many years ago, a ten-year-old boy approached the soda counter and climbed onto a stool to ask the busy waitress, “What does an ice cream sundae cost?” “Fifty cents,” she answered. The boy pulled out an assortment of change and counted it carefully as the busy waitress looked right and left at other customers she had to wait upon. “Well how much would just plain ice cream be?” he asked. “Thirty-five cents” she replied curtly. Again the boy counted his money. “May I have a plain ice cream in a dish, please?” He gave the waitress the thirty-five cents and she brought him the ice cream. Later, the waitress returned to clear the boy’s dish and when she picked it up, she discovered two nickels and five pennies. The waitress smiled tenderly as she realized that the boy had enough money for the sundae, but settled for plain vanilla so he could leave her a gratuity for her service.