The fact that until recently the word shit appeared in print as s— has nothing to do with moral considerations. You can't claim that shit is immoral, after all! The objection to shit is a metaphysical one. The daily defecation session is daily proof of the unacceptability of Creation. … The aesthetic ideal of the categorical agreement with being is a world in which shit is denied and everyone acts as though it did not exist. This aesthetic ideal is called kitsch. … Kitsch is the absolute denial of shit, in both the literal and the figurative senses of the word; kitsch excludes everything from its purview which is essentially unacceptable in human existence.

The Unbearable Lightness of Being (1984) - Part Six: The Grand March