It's a blonde who goes to a shop and says to the seller:
- Hello, could I have this microwave? The seller answers:
- Sorry, we do not accept blondes here.
Then the blonde goes home and dyes her hair red. She goes back to the store and tells the seller:
- Hello, could I have this microwave? The seller answers:
- Sorry, we do not accept blondes here.
The blonde returns home, dyes her hair black, rests the same question at the store. The seller always answers:
- Sorry, we do not accept blondes here.
The blonde then replies:
- But how do you know that I'm blonde? The seller answers:
- That's because we do not sell microwaves ma'am, we sell TV screens.