Say it ain't so!  From Yahoo! news:

Outkast fans like 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.

Outkast's number one hit "Hey Ya" includes the "shake it" line as a reference to the motion that amateur photographers use to help along the self-developing film.

But in the "answers" section on the Polaroid Web site (here), the 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 Web 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."