If you envy or admire the glamorous lives of big stars, this video ought to scare you straight. It details country singer Taylor Swift’s one-day trip to New York for GMA, MTV, Letterman and a Glamour event. Swift appears in a series of cramped interiors (green room, makeup room, limo), reads her horoscope (“How do they know that?”), talks to entourage and publicists and sounds dumb as a stump. She never seems to see the outside world, though she refers once to “walking across the street.” Andy Warhol couldn’t have drawn a more harrowing picture of vapid celebrity, yet it’s actually part of a “video diary” made by Swift for USA Today. Next time you’re disconsolately sighing over Shia LaBoeuf on the Tonight Show, imagine him making small talk with his publicist.