A blonde walks into an electronics store and says, "I'd like to buy that tv please." The salesperson replies, "I'm sorry. We don't sell to blondes here."

The blonde goes home and dyes her hair brown, and a few days later returns to the store, again asking to buy the tv. "I told you, we don't sell to blondes, miss. Please go home!" the salesperson tells her.

The blonde goes home, shaves her head and puts on a baseball cap.

In a few days she asks once again to buy the tv. "We just don't sell to blondes here! Please, give up! Go home!" the salesperson exclaims. "I dyed my hair, you still knew I was blonde. I shaved my head and wore a hat, you still knew I was blonde! How do you know?" she cries, exasperated. The salesperson points to the item she wants. "Well, first of all, that's a microwave..."