Call her sister in.

Looking you over, she feels your chest, back, buttocks and penis softly and appraisingly.

"Hmm. Pretty good. Fresh and trainable. You might be the one to finally get through to Sindy."

Turning around, she comes back with a thin, long butt-plug and starts prepping it with a tube of KY lubricant. Leaving it on a table in sight of you, she kneels down and looks you in the eyes. "I'm going to come back with my younger sister and you're going to beg her to push this into your ass. Understand?"

"Yes, M-Mistress."

"Good." She walks out and comes back a minute later with a young woman.

"I'm telling you, Sindy, you're going to like this one."

"Look, I told you, I'm not interested in that kind of thing-" she looks at you, startled as she walks in. "You!?"

You recognize her! She works at a convenience store you frequent! You didn't think you'd meet someone you know here.

"Toy...?" your mistress prompts.

Before you can talk, Sindy cuts in, "I don't know your name, but come on! I know you have SOME dignity, SOME self-respect. We see each other every week. No woman, even a dominatrix, wants to be around a man totally lacking in backbone."

Your mistress whispers to you, "If you beg her to do something, she will. Don't worry: she's 19."

"Look, show a little spine here and ask to be let go. We can go see a movie or something."

"Beg her," your mistress whispers.

"TELL her to let you go and she will. I may be her younger sister, but I can make her do that. Look, I'll sweeten the deal by giving you a hand job, just ONCE, and we'll pretend none of this ever happened. We see each other every week and I'd like you to be able to look me in the eyes."

Sindy looks incredibly sexy, and even undoes the top three buttons on her blouse. Your mistress whispers again, "Don't listen to her, Toy. You know what you want?"