A blonde walks into a store and says " How much for that TV" and the salesman says " We don't sell things to blondes." So she goes home.

The next day she comes back and says " How much for that TV" and the salesman says " We don't sell things to blondes."

So that night she dyes her hair brown.

The third day she goes back and says " How much for that TV"

and the salesman says " We don't sell things to blondes."

Then she says " How did you know I was a blonde?"

And the salesman says
" Because thats a microwave!"