The bar immediately falls absolutely quiet. In a very deep, husky voice the woman next to him says, "Before you tell that joke, Sir, you should know five things":
1. The bartender is a blonde girl.
2 . The bouncer is a blonde gal.
3. I'm a 6-foot tall, 200-pound blonde woman with a black belt in karate.
4. The woman sitting next to me is blonde and is a professional weightlifter.
5. The lady to your right is a blonde and is a professional wrestler.
Now, think about it seriously, Mister. Do you still wanna tell that joke?"
The blind man thinks for a second, shakes his head, and declares, "Nah, not if I'm gonna have to explain it five times."