Just Won’t Work:
An old man was watching a kid play fireman outside when he noticed something odd.
The old man walked outside and noticed that the kid was sitting in a red wagon with his fireman's hat on and a sting hooked from the wagon handle to the dogs balls.
The old man said "You know son, it would probably be better if you tied that string around the dog's neck."
The boy replied, "I tried that, but the siren won't work that way."