Joke from Grant

A boy was talking to a couple of friends in the schoolyard.
Each was bragging about how great their fathers are.
 
The first one said: "Well, my father runs the fastest. He can fire an
arrow, and start to run, I tell you, he gets there before the arrow!"
 
The second one said: "Ha! You think that's fast! My father is a 
hunter. He can shoot his gun and be there before the bullet!"
 
The boy listened to the other two boys and shook his head.
He then said: "You  know nothing about fast.  My father is a 
civil servant.  He stops working at 4:30,... and he's home by 3:45!"