Any young, impressionable, not-necessarily teenage girl that admires and wants to emulate the slutty and materialistic personae of female Hollywood pop icons, like Britney Spears, Paris Hilton, Jessica Simpson, the Olsen twins, Lindsay Lohan, etc. They are extremely shallow and are obsessed with their looks, weight, clothes, popular trends, and equally shallow and vapid males.
This is how stupid girls might talk:
"Like, it's already been six hours since I last puked. I better get started again."
"God, I'm such a fat-ass. I had, like 300 calories today."
"What am I going to do? I've already worn that outfit once before. I can't wear it again!"
"Mark is soo much hotter than Kevin. I mean, Kevin drives a 3-series BMW, and shops at ghetto-ass Old Navy. Mark has a G-Class and only wears Abercrombie. Soo hot."
Defined by the singer Pink in her song "Stupid Girls", stupid girls are shallow, slutty and un-intellegent women, in one word: girls that make more than 200 years of battle for women's rights not worth it.
"Stupid girls" don't want to work hard, gain their own rights and opinions about things like science, politics, culture&society... They don't want to study hard or get a good job; all they want is entertainment, shopping, possesions, being beautiful and have the best boyfriend, and about all the rest- who cares?
Though I don't like Pink's music style, as a supporter of Feminism and women's rights (hey, and I'm a guy!) I totally agree with her lyrics of "Stupid Girls":
Maybe if I act like that, that guy will call me back...
Go to Fred Segal, you'll find them there.
Laughing loud so all the little people stare.
Looking for a daddy to pay for the champagne...
(Drop a name)
What happened to the dreams of a girl president?
She's dancing in the video next to 50 Cent...
They travel in packs of two or three,
With their itsy bitsy doggies and their teeny-weeny tees
Where, oh where, have the smart people gone?
Oh where, oh where could they be?
Disease's growing, it's epidemic
I'm scared that there ain't a cure
The world believes it and I'm going crazy
I cannot take any more!
I'm so glad that I'll never fit in
That will never be me
Outcasts and girls with ambition
That's what I wanna see
Disasters all around
Their only concern
Will they **** up my hair
Maybe if I act like that, that guy will call me back
Porno Paparazzi girl, I don't wanna be a stupid girl