betrayed by "hey ya!"

From CNN.com:

OutKast fans [are repeatedly instructed] to "shake it like a Polaroid picture," but the instant camera maker is warning consumers that taking the advice of the hip-hop stars could ruin your snapshots. [...]

[T]he company says that shaking photos, which once helped them to dry, is not necessary since the modern version of Polaroid film dries behind a clear plastic window.

The image "never touches air, so shaking or waving has no effect," the company said on its site. "In fact, shaking or waving can actually damage the image. Rapid movement during development can cause portions of the film to separate prematurely, or can cause 'blobs' in the picture."