Three kids argue, whose father is the fastest.

One says, "My father is the fastest, he can overtake an arrow he shot with a bow."

The second one says, "My father is even faster - he can shoot a gun and then run to catch the bullet before it hits anything."

The third kid says, "You actually don't understand what speed is. My father is even quicker! He finishes work at 4:30 pm, but he's back home by 3:45 pm almost every day."