There was a farmer's boy who loved tractors; went absolutely crazy for them. As he grew up, his bedroom was littered with tractor toys, wallpaper, ornaments, you name it. At the end of every school day, he used to go to just outside his father's farm and watch the tractors roll by. It was safe to say he knew what he wanted to do for a career: "twactor dwiver" he would always say as a child.
His 10th birthday rolled around, and there was a peculiar looking present awaiting him in the living room. It was a dog - a puppy at that! It was love at first sight for the boy. Now, at the end of every school day, he'd take his puppy for walks across the fields and farms where the tractors drove. His bedroom was now being shared between a love of tractors and dogs.
The dog had just turned 8; the boy was taking him for a walk, after college at the usual time across the usual field. He stopped to look at the sunset just appearing, until he heard a distinct and loud YELP! followed by the sound of a tractor engine. He gulped and looked down - to see the mutilated remains of his dog, mauled by a tractor. He didn't know what to feel, anger? Devastation? Betrayal? Either way, his first thought after "oh my god that's my dog's corpse" was "I need to drown my sorrows", and he headed to the local pub.
Upon arrival, the pub was closed - how could the day get any worse, he thought. The landlord was standing just outside, looking rather furious at a large amount of smoke emanating from the chimney.
"How come's you're shut?" asks the boy.
"I'm not sure" replies the landlord, "there must've been a problem in the kitchen, because loads of thick smoke backed up into the rest of the building".
"Mind if i take a look?" - without a reply from the landlord, the boy enters the pub to be greeted with an enormous amount of smoke. Not seemingly bothered by it, he takes a very deep breath. The amount of smoke noticeably reduces.
"Whatever you're doing is working, lad!" exclaims the landlord. The boy inhales again, and again, and again and gradually the smoke in the pub reduces to nothing. The landlord rejoices and enters the building; "Amazing! Drinks are on the house lad, anything you want! One question though: how on earth did you pull that off?"
The boy looks unsure for a second, but then replies - "I'm an extractor fan".
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