A little facesitting

Your robot mistress smiles, and pinches the tip of your cock.

"In my home, the slaves get what they deserve. And I think that you deserve some rough and tough treatment. You will feel the muscles of my butt on your face."

Goddess smiles wickedly, and orders Anna to hold you.
"Everyone has gone through that process...", Anna whispers to you. "mistress likes to prove her superiority"

"Silence, child." She adresses you "You will lick my ass, and you will like it, understood?"

"Yes"

Anna slaps you. "You will adress mistress as "Mistress"
"that is a proof that his training should start early."

Mistress gets up, and flexes her muscles. She is beautiful. a strength incarnate.
She raises her dress, and grabs her but cheeks splitting them apart, and gets them closer to your face.
Her muscles are rock hard, but the smell isn't bad. She is a robot. She doesn't go shit. There are somewhat organic smells, cum, sweat, but you can lick her crack safely.
She smothers you with her weight, and she also turns around which makes her hard to lick.