A teenage boy is mad about tractors. He has model tractors, books about them and posters on the wall. Every year he goes to the County Show with his Dad and the tractor dealers all indulge him, chat to him and let him sit in the cab of the new models. After a few years of this they decide he's too old to be treated like a kid, is getting to be an embarrassment and is putting potential customers off. They all agree to freeze him out, and so when he and his Dad turn up they fob him off and nobody will let him get near the tractors.
The boy is furious. When he gets home he tears down all his tractor posters, throws his books in the bin and stamps on his models. - That's it! he says. - I'm finished with tractors!
His Dad feels sorry for him and tries to make him feel better. - Well Son, maybe they do have a point about you getting too old for this. Tell you what, how about we go down to the pub together and I'll buy you your first pint? Would you like that?
The boy brightens up. - Thanks Dad! Yes, I'd like that very much.
So they walk down to the pub, but when they get there it's full of tobacco smoke and his Dad says, - Sorry Son but I can't go in there, you know I don't smoke and it'd choke me.
The boy says, - Don't worry Dad, leave this to me. So he puts his head in the doorway, takes a massive big inhale and to his Dad's amazement, sucks in all the tobacco smoke, leaving the room clear. He blows it away down the road and tells his dad, - It's ok, we can go in now!
- What the heck...? How on Earth did you do that, Son?
- Simple, Dad......
.....I'm an ex tractor fan!