A blonde goes to buy a TV.

A blonde goes out to buy a TV at a department store.

Blonde: I'd like that TV please.

Clerk: Sorry, we don't sell to blondes.

So the blonde goes out and dyes her hair brown. She then goes back to the store.

Blonde: I'd like that TV please.

Clerk: I'm sorry but we don't sell to blondes.

Amazed she goes out and dyes her hair ginger. She later returns to the store.

Blonde: I'd like that TV please.

Clerk: I'm sorry, we don't sell to blondes.

Blonde: How did you know I'm blonde?

Clerk: Because that's a Microwave.

**EDIT**: Corrected format.