A blind man enters a bar. He finds his way to a bar stool and orders a drink. After sitting there for a while, he yells to the bartender in a loud voice, "Hey bartender, you wanna hear a dumb 'blonde' joke?"

The bar immediately falls deathly quiet. In a deep, husky voice, the woman next to him says, "Before you tell that joke, sir, I think it is just fair, given that you are blind, that you should know five things:

One: The bartender is a blonde woman.
Two: The bouncer is a blonde woman.
Three: The woman sitting next to me is blonde and is a professional boxer.
Four: The lady to your right is a blonde and is a professionalwrestler.
Five: I'm a 6-foot, 200 pound blonde woman with a Ph.D., a black belt in karate, and I have a very bad attitude.

Now, think about it seriously, mister. Do you still want to tell that joke?"

The blind man thinks for a second, then shakes his head and says:
"Nah. Not if I'm gonna have to explain it five times."