A trick One day,a gentleman is walking in a street.He sees a little girl ringing a doorbell on tip

A trick One day,a gentleman is walking in a street.He sees a little girl ringing a doorbell on tip
A trick
One day,a gentleman is walking in a street.He sees a little girl ringing a doorbell on tip toe.But it's too high for her.
So the gentleman says to her,"Let me help you."
He rings the bell.The girl looks at the gentleman and says,"Now let's run away." The gentleman knows that it is a trick.