HINTING
Despite the chilly spring day little Wilbur was out playing without his coat. This worried a neighbor, but her advice went unheeded. Finally, she said: "Wilbur, go home and get your coat, and when you come back I'll give you a piece of cake."
The bribe worked, and Wilbur soon returned with his coat on and was duly rewarded. Next day he knocked at the door to announce significantly:
"I ain't got my coat on today."