This blind fella is standing at the corner with his seeing eye dog waiting to cross the street, when his pooch lifts his leg and you guessed it, right down the side of his nice herringbone tweed trousers. The guy immediately reaches into his jacket pocket and retrieves a doggie treat which he starts to offer to Fido.A businessman, who is also waiting to cross the street, observes this happening and interrupts, "None of my business, but are you aware of the fact that your dog just wizzed all down the leg of your pants?""Yes, I'm trying to break him of that habit", replies the blind man."Well, it's none of my business," retorts the onlooker, "but you're not going to teach him much by rewarding him with a treat!" To which the blind fella chuckles, "Oh I'm not rewarding him. I'm just trying to find his head so I can kick his ass!"