A blind guy on a bar stool shouts to the bartender, "Hey, do you want to hear a blond joke?"
In a hushed voice, the bloke sitting next to him says " Before you tell that joke there is something you ought to know mate, the bartender is 6' tall and blond, the bouncer is 6' 3" tall and weighs 220 lbs and is blond, I'm 6' 4" tall, a black belt veteran of special forces and the guy next to me is a 6' 2" tall blond and is pushing 300 lbs, do you still want to tell that joke ?"
" Oh Christ no !" replies the blind man, "Not if I've got to tell it four times !".