A bloke is driving around in his Porsche in the English countryside. He stops outside a field full of sheep, walks up to the shepherd and says, Ive got an offer. Ill guess how many sheep youve got in this field, and if I guess right, I get to take a sheep with me. If I guess wrong, you get my car.The shepherd thinks hes on to a sure thing and agrees. 137 says the driver.Damn me, youre right, says the shepherd and dutifully hands over a sheep.The man walks away, stuffs the sheep in his car and is about to drive away when the shepherd knocks on his window. Ive got a proposal for you. says the shepherd. If I can guess what you do for a living, I get to take your car. If Im wrong, you can have all my sheep.Done, says the driver.Youre a consultant, says the shepherd.Bloody hell! How did you guess?Easy. You come in here uninvited, you tell me what I already know, and then you charge me for it.