He loves suffering under my feet.

Mistress Sarah: He loves suffering under my feet. It's always this game of power and powerlessness. Everyone weakens under my feet, and I love playing with my power and the slaves' addiction to the salt on my soles. He loves suffering for me. I slap him with my feet and fuck his mouth with my feet. As a reward, I press both soles down on his slave face with all my might, taking his breath away. There's no escape under my feet; I press his mouth and nose shut. Sitting above my slave gives me this arousing feeling. The sensation of a slave's face flattened beneath my sweaty soles brings a smile to my face.