Star Spangled Spoiler: Jesse McCartney Forgets Lyrics, Ruins National Anthem

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Maybe you can chalk it up to nerves, but at the NASCAR Pepsi 500 in Fontana, Calif., Jesse McCartney showed an utter lack of patriotism - or just brain cells - when he forgot an entire verse of our national anthem, leaving onlookers confused.

You could call him the Star Spangled Spoiler ... or something actually funny.

Sure, our interns might have done the same, but it's pretty bad for an alleged singer. Who are we kidding, our interns could do better - and they're really not smart.

Fortunately, Jesse dated Melrose Place star Katie Cassidy and hooked up with Aubrey O'Day and Hayden Panettiere, so it's not likely to hurt his game with the ladies.

Check out Jesse McCartney forgetting the national anthem lyrics ...

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