The Whale from South Park. According to Willzyx (or the show commentators), he is from the moon and that is where all Orca whales came from.
Mike: "All right, out of the truck."
Truck Driver: "What the hell is going on?"
Mike: " You're carrying a stolen whale."
Truck Driver: "Stolen? You kids told me you won it in Pizza Hut!!"
Kyle: "You don't understand sir!! Willzyx has to go back to the moon!!"
When a man has sex with a woman Doggy-style and imitates a firetruck sound and later when he cums on/in her he'd refer to it as putting out fire.
Samantha: "Jerry kept hooting while we were doing it doggy style yesterday."
Lois: "Ah. You mean he did the Fire truck..."
Samantha: "No wonder he was yelling 'put out that fire big guy' when he was cumming!"