The forbidden taste test of the periodic table! Green elements like oxygen? Sure, lick away! Yellow phosphorus? Might wake up with one less tongue. But those red cesium elements? They'll turn your mouth into a chemistry demonstration that ends with a hospital visit. And if you're eyeing those purple radioactive elements at the bottom, congratulations on your upcoming superhero origin story—though your superpower might just be "glows in the dark." Next time someone asks "for science," remember: carbon is your friend, plutonium is not.