A blind guy on a bar stool shouts to the bartender: "Wanna hear a blonde joke?"
In a hushed voice, the guy next to him says: "Before you tell that joke, you should know something. Our bartender is blonde, the bouncer is blonde. I'm a 6' tall, 200 lb black belt. The guy sitting next to me is 6'2'', weighs 225, and he's a rugby player. The fella to your right is 6'5'' pushing 300 and he's a wrestler. Each one of us is blonde. Think about it, mister. Do you still want to tell that joke?"
The blind guy says: "Not if I'm going to explain it five times."