The 'disgusting' urge is palpable in this vile, twisted encounter. The whore, a pathetic creature reduced to her basest instincts, is desperate to 'earn her keep.' She's not here for pleasure, but for punishment, for the sick thrill of being used, degraded. She's a 'worthless' vessel, a hole to be filled, a toy to be broken. As she's forced to her knees, her 'urge' becomes our entertainment, her debasement, our pleasure.