An old man operated a street corner pretzel stand, selling the pretzels for a quarter each.
Each day at lunch time, a young lawyer would pass the stand, leave the man twenty-five cents, but never take a pretzel.
This continued for a number of years and throughout that time, they had never spoken.
One day as the lawyer passed the pretzel stand, he left his quarter as usual and the old man finally spoke to him.
"Sir, I do appreciate your business and you've been an excellent customer, but I must tell you that the price for the pretzels has increased to thirty-five cents."