A 10 year old boy went to an ice-cream shop and asked how much a cone costs. The waiter said "Rs. 18." Then the boy started counting how much he had. And he asked how much does a small cone costs. The irritated waiter said "Rs. 15." Then the boy ordered for a small cone. He ate, paid the bill and left.
When the waiter came to pick up the plate he was surprised: the boy had left Rs.3 as tips for him.
"Always Try To Make Everyone Happy With Whatever You Have"
... author Unknown