McDonald's- Shrek Glasses containing WHAT?!

CADMIUM : Atomic symbol Cd, element No. 48, with atomic weight 112.41 AMU. Cadmium is a metal which, in common with Boron and Hafnium, is used as a neutron absorber in nuclear reactors. Commonly, Cadmium has been used in control rods (and so has Hafnium) and is not considered as a "burnable poison" as is Boron. Cadmium is toxic to animals, has a melting point of 610 degrees Fahrenheit, and interestingly among commonly used neutron absorbers has the largest macroscopic cross section for absorption for thermal neutrons at 2550 barns. Cadmium can also be found in some collectible drink glasses presently offered at McDonald's restaurants across the globe which celebrate the most recent Shrek movie. Customers can be both amused and poisoned by these glasses, and will also benefit from greatly increased ability to absorb free neutrons (in thermal energies only, since Cadmium is less effective as energy of neutrons increases.)

McDonald's already recalled the glasses, by the way.