A blind man walks into a bar. He goes up to the bartender and he says, "hey, you wanna hear a blonde joke?"

The bartender says, "now hold on just a second. Before you start telling this joke, there are a few things you oughtta know first. First, I'm blonde. Second, the off-duty cop to your left is blonde. Third, the karate instructor to your right is blonde. And finally, the biker gang seated behind you are all blondes. Now, keeping that in mind, are you sure you want to tell us this joke?"

The blind man replies, "not if I have to explain it a bunch of times."