Zoe cleared her throat. "Slave Millie" she barked. "Take off your pants and underwear, and get down on your hands and knees. I think you need a spanking."
Millie's naked buttocks were on display before Zoe before Zoe had even finished giving her commands.
Zoe's hard hands came down on her slave's bountiful ass, while Millie shrieked in ecstasy. "Slave Millie" commanded Zoe "I want you to have an orgasm." Millie blushed fiercely as a wave of pleasure swept over her.
Zoe took out the long frustrations of the day on Millie. When she had finished, Millie's buttocks were blazing red.
"Thank you, Mistress Zoe." gasped Millie. She had never felt this good or this alive before.
Zoe turned to Jess. "Your turn." she said.