Dumb Blond

This blond walks into a hardware store and says, "I want that tv over there!" The guy who owned the store said, "I'm sorry, we don't serve dumb blonds." So, she goes to ANOTHER hardware store and says, "I want that tv over there!" Again, the guy who owns the store says, "I'm sorry, we don't serve dumb blonds." So the blond dyes her hair to look brunette. She goes back to the first hardware store and says, "I want that tv over there!" The guy who owned the store said, "I'm sorry, we don't serve dumb blonds." So, the blond says, "How did you know?" The guy says, "That's a microwave, not a tv.