Scatology has a long literary association with satire,    as it is a classical mode of the grotesque , the grotesque body and the satiric grotesque.   Shit plays a fundamental role in satire because it symbolizes death , the turd being "the ultimate dead object".   The satirical comparison of individuals or institutions with human excrement , exposes their "inherent inertness, corruption and dead-likeness".    The ritual clowns of clown societies , like among the Pueblo Indians , have ceremonies with filth-eating .   In other cultures, sin-eating is an apotropaic rite in which the sin-eater (also called filth-eater),   by ingesting the food provided, takes "upon himself the sins of the departed".  Satire about death overlaps with black humor and gallows humor .