In a new 'CBS Sunday Morning' interview airing tomorrow, former 'American Idol' judge Paula Abdul opens up to Julie Chen about certain misconceptions people have of her -- namely, that she's gone on the air inebriated and that she's unintelligent.

"I am intelligent," Abdul, 48, says with a smile. "Having a brain, that's a concept, yes, with Paula Abdul. I have a brain."

And what's her reaction to rumors about why she seems occasionally less than coherent? "I've never had a drinking problem. Even though I've been in this business for quite some time, I've never physically been drunk in my life. I've never been drunk in my life. I don't use recreational drugs. But I am goofy."