A human toilet in the truest sense, the sub's asshole is the vessel for the dominant's spit. They fill it, make the sub drink, then clean it with their tongue, only to repeat the process. The sub, asshole stretched and used, takes it all, their humiliation and pleasure intertwined. The dominant, driven by ass-fetish and domination, commands and controls, their spits a symbol of their power, their tongue a tool of cleansing and torment.