The anonymous submissive, bound and eager, takes on the daunting task of inflatable anal training. The thick, black dildo, resembling a veiny, monstrous cock, is inserted and inflated, stretching the sub's asshole to its limits. The sub's moans fill the room as they push through the intense discomfort, their asshole gaping obscenely. The air pump hisses, growing the toy even larger, until finally, the sub's asshole can't take anymore, and a graphic prolapse occurs, leaving them gasping and spent.