‘Harmful to minors’ means that quality of any description or representation, whether constituting all or a part of the material considered, in whatever form, of nudity, sexual conduct, sexual excitement or sado-masochistic abuse which predominantly appeals to the prurient, shameful or morbid interest of minors, is patently offensive to prevailing standards in the adult community with respect to what is suitable material for minors, and is without serious literary, artistic, political or scientific value.