Dumb Blonde Joke No.156

A Blonde and a Brunette are skydiving. The Brunette jumps out the plane and pulls the cord nothing happens. She pulls the emergency cord and still nothing. The Blonde jumps out of the plane and yells "Oh! So you wanna race, huh?"
This Weeks Village Idiot
What did Britney Spears do to become this weeks celebrity dumb blonde?

I Bet I Know