Fuel's Brett Scallions blurts out an expletive at the youth event headlined by Hilary Duff

By Stephen M. Silverman and Nakisha Williams
Updated January 19, 2005 08:00 AM

Gearing up for Thursday’s inauguration of President Bush, Hilary Duff headlined the America’s Future Rocks Today concert at the D.C. Armory – but stealing the show was an expletive uttered by the Pennsylvania rock band Fuel.

“Welcome to the greatest —-ing country in the world,” Fuel frontman Brett Scallions announced at the concert attended by the President. Parents in the house, which was described as half full, were not amused. Scallions quickly apologized,saying, “Excuse my language.”

Tuesday’s concert, which included performers Ruben Studdard, JoJo, Ryan Cabrera and 3 Doors Down and paid tribute to youth volunteerism and community service, was planned partially by first daughter Barbara Bush, concert officials said. She and her twin Jenna watched the show but did not appear onstage.

“It s really cool,” Duff told PEOPLE during a backstage break. “I think the whole thing is all about talking about the future and the youth and how we can make things better and how to treat other people.

The singer, who performed in a black sequined top, rolled-up jeans and sneakers, prepped the crowd for the arrival of the President and First Lady Laura Bush.

“My call to you all is that as you enjoy the great freedoms of America and as you enjoy yourself at this inauguration, I hope you take away the lesson of helping somebody in need,” said President Bush, who appeared near the event’s conclusion – long after Scallions’ remark. “And when you do, it will not only make our country a better place, it will lift up your own spirit.”

Others appearing at the event attended by about 7,000 were former football player Jason Sehorn, actor Stephen Baldwin (who rode a skateboard onto the stage) and Access Hollywood’s Nancy O’Dell, whose co-host Billy Bush is the son of Jonathan, the brother of former President George H.W. Bush.