Fire Truck

A firefighter was working on the engine outside the station when
he noticed a little girl nearby in a little red wagon with little
ladders hung off the sides and a garden hose tightly coiled in the
middle. The girl was wearing a firefighters helmet. The wagon was being
pulled by her dog and her cat. The fire fighter walked over to take a
closer look. "That sure is a nice fire truck," the firefighter said
with admiration.
"Thanks," the girl replied.
The firefighter looked a little closer and noticed the girl had tied
the wagon to her dog's collar and to the cat's testicles. "Little
partner," the firefighter said, "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, I
think you could go faster."
The little girl replied thoughtfully, "You're probably right, but then
I wouldn 't have a siren.