Una broma para amigos y su explicación en perfecto alemán de Baviera Hungry? Scare those fridge-bound famished food foragers with a head in a jar! Using a photo editor, two pictures are blended together to create flat image of a head, which is then laminated and submerged in a jar. When the flattened image in inserted into the curved jar, along with the distortion from the water, gives the illusion of a decapitated head in a jar of preserving fluid.