May As Well Get It Right
A firefighter is working on an engine outside the station, when he notices a little girl nearby with a red wagon with little ladders hung off the sides and a garden hose coiled in the middle. The wagon is being pulled by a dog and a cat.
The firefighter walks over to take a closer look, and notices that the girl has tied the wagon to her dog's collar and to the cat's testicles.
"Little girl," the firefighter says, "I think if you were to tie that rope around the cat's collar too, you could go faster."
The little girl replies thoughtfully, "You're probably right, but then I wouldn't have a siren."