(CNN) -- It would be so easy to blame the teenage girls.

Check out the studio audience of "American Idol," and you will see throngs of them waving signs and screaming for their favorite contestants. They are the ones who rushed the stage Wednesday night after contestant Scotty McCreery sang an Elvis Presley song to hug him and tug on his clothes.

Does 'American Idol' have lady problems? - CNN.com.