Fantastic story about "Self Appraisal"

A little boy went to a telephone booth which was at the cash counter of a store and dialed a number. The store-owner observed and listened to the conversation:

Boy : "Lady, Can you give me the job of cutting your lawn? Woman : (at the other end of the phone line) "I already have someone to cut my lawn. "Boy : "Lady, I will cut your lawn for half the pri…