Give/Take?

A man had fallen between the rails in a subway station. People were all crowding around trying to get him out before the train ran him over. They were all shouting.
"Give me your hand!" but the man would not reach up.
A man elbowed his way through the crowd and leaned over the man.
"Friend," he asked, "what is your profession?"
"I am a Revenue officer," gasped the man.
"In that case," said the first man, "take my hand!"
The man immediately grasped the other man's hand and was hauled to safety. He turned to the amazed bystanders and declared, "Never ask a tax man to GIVE you anything, you fools!"