A fire fighter is working on the engine outside the fire station when he notices a little boy next door in a little red wagon with little ladders hung off the sides and a garden hose tightly coiled in the middle.. The boy is wearing a fire fighter's helmet. The wagon is being pulled by his dog and his cat. The fire fighter walked over to take a closer look. 'That sure is a nice fire truck,' he said with admiration. 'Thanks,' the little boy said. The fire fighter looks a little closer and notices the boy has tied the wagon to his dog's collar and to the cat's testicles. 'Little Partner', the fire fighter says, 'I don't want to tell you how to run your rig, but if you were to tie that rope around the cat's collar instead of it's testicles, I think it could run faster.' The little boy replies thoughtfully, 'You're probably right, but then I wouldn't have a siren.'