Deciding that she needed a television one day, a blonde goes to the nearest store to choose a model.

After spending an hour finding something that she liked, she pointed it out to the store owner and said, "I want that TV packed and sent to my address."

To which the owner said, "Sorry, but I don't sell TVs to blondes."

The blonde stomped out of the store, dyed her hair black, went back the next day and asked for the same TV. Again, the owner said, "Sorry, but I don't sell TVs to blondes."

The blonde left, decided that she was going to get that TV one way or the other and got a plastic surgery. Two weeks later, she went back to the store and asked for the TV once more.

The store owner said, "Sorry, but we don't sell TVs to blondes."

"I give up", said the blonde. "I got my hair dyed and even got myself a new face! How in the world did you know that I was blonde??"

"Because that's a microwave you are pointing at", said the store owner calmly.