Blonde and TV

A blonde walks into an appliance store and says, "I would like to buy that T.V. please."

The store clerk replies, "I'm sorry, we don't do business with blondes."

So she stormed off back to her house and dyed her hair black.

The next day, she went back to the same store and said, "I would like to buy that T.V. please."

The store clerk, once again, replies, "Sorry, we don't do business with blondes."

The blonde replied, "How did you know I was blonde?"

The clerk says, "Because thats a microwave."