A blonde was complaining to her friend about constantly being called a dumb blonde. Her friend tells her "go do something to prove them wrong! Why don't you learn all the state capitals or something?" The blonde thinks this is a great idea, and locks herself up for two weeks studying hard.
The next party she goes to, some guy is making dumb blonde comments to her. She gets all indignant and claims, "I'm NOT a dumb blonde. In fact, I can name ALL the state capitals!"
The guy doesn't believe her, so she dares him to test her. He says, "Okay, what's the Capital of Montana?"
The blonde tosses her hair in triumph and says, "That's easy! It's M!"