Probably a repost but i dont think i have seen it here...
A fireman is polishing his fire engine outside the fire station when he notices a little girl next door in a little red cart with little ladders hung on the side and a garden hose tightly coiled in the middle.
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> The little girl is wearing a fireman's helmet and has the cart tied to a dog and a cat.
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> The fire-fighter walks over to take a closer look: 'That's a lovely fire engine,' he says admiringly.
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> 'Thanks,' says the little girl. The fireman looks closer and notices the little girl has tied one of the cart's strings to the dog's collar and one to the cat's testicles.
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> 'Little colleague,' says the fire-fighter, 'I don't want to tell you how to run your fire engine, but if you were to tie that rope around the cat's collar, I think you could probably go a lot faster.'
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> The little girl pauses for a moment, looks at the wagon, at the dog and at the cat, then shyly looks into the fireman's eyes and says:
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> 'You're probably right, but then I wouldn't have a f**king siren, would I?'