The dominatrix, clad in patent leather heels, commands her sub to lie back. She straddles him, her heels digging into his flesh. She grinds her feet, crushing his caged cock and balls with methodical precision. He squirms, but she pins him down, her heels glistening with his sweat and pre-cum. She leans in, whispering filthy promises of release, pushing him closer to the edge of ecstasy and pain.