A blonde woman walks into a store and asks a clerk if she can buy the television in the corner.
The clerk looks at her and says, "I don't serve blondes." Disappointed, she goes home and dyes her hair black.
The next day, she returns and asks the same question. Again, the clerk refuses, saying he doesn't serve blondes.
Frustrated, she goes home and dyes her hair red.
Confident she'll succeed this time, she returns to the store and approaches a different clerk.
To her astonishment, this clerk also says, "I don't serve blondes."
The woman asks, "How do you know I'm a blonde?"
The clerk replies with a look of disgust, "That's not a television. It's a microwave!"