McDonald's is recalling 12 million drinking glasses it was selling to promote the new "Shrek" movie (yes, there is another one!) because the designs painted on the glasses contain the toxic metal cadmium.

The U.S. Consumer Product Safety Commission, announced the voluntary recall and warned consumers to immediately stop using the glasses. In response, McDonald's said it would post instructions on its website next week regarding refunds.

Also on MNN: Read more about the drinking glass recall