A blonde walked into an electronics store and said to the salesmen: “I want that TV.” The salesperson shook his head and said, “No, we don’t sell to blondes.”
So the blonde left and came back with her hair dyed brown and said: “I’ll take that TV.” Again the salesman said: “No, we don’t sell to blondes.”
So she left again and came back with a hat, a fake nose and with her hair dyed black and said: “I want that TV.” But the salesman still said: “sorry, we don’t sell to blondes.”
Finally the blonde got fed up and said, “That’s it! How do you keep guessing I’m a blonde?!” she asked.
“Because that’s a microwave”