Katy Perry beaned over shilling for Pepsi

If your school age kid spends his or her time listening to new music instead of the Beatles and maybe, I dunno, Hank Williams (like they should be doing), then you're probably encouraged that Katy Perry's "Roar"—the lead single from her new Prism album—at least comes with some sort of bullshitty self-empowerment message.

But wait a minute! It'll be interesting to hear Katy Perry roar when she opens up Variety tomorrow and finds herself being denounced in a full-page ad for her involvement in the marketing of Pepsi.

Paid for by a collective of consumer advocacy groups, the ad reads: "Being popular among children brings with it an enormous responsibility. Don't exploit that popularity by marketing a product that causes disease in your fans."

"These kids all receive the same message from Perry's Pepsi ads," said Michael Jacobson of the Center for Science in the Public Interest, in an interview with USA Today. "Live for now—and worry about the health consequences later."

Because USA Today wants to hypnotize you into thinking it's "balanced", the report points out that Perry doesn't have a formal endorsement deal with the soft drink giant; something that the average eight-year-old will surely bear in mind as they watch the Pepsi-logo festooned Part of Me 3D concert film. 

Perry joins a long list of Pepsi-friendly celebrities who have happily encouraged your child to throw their health away in exchange for a 30-second sugar rush, including Beyoncé, Michael Jackson, Joan Crawford and Richard Nixon.