A little boy, wearing a big red fire hat, was riding a toy fire truck down the street. The truck was being pulled by a beautiful Labrador Retriever. Unfortunately, the rope was tied around the dog's privates, and as a consequence, the truck was going very slowly. A man walking down the street noticed how slowly the boy was being pulled and gently said to him, ''You know, son, that truck would go a lot faster if the rope was tied around your dog's neck.''
The boy nodded in agreement and said, ''But then there wouldn't be a siren.''