A collar

Once Matt is naked and kneeling by Regina's throne, his cock desperately throbbing, she produces a what looks like a dog collar. Leaning down, Regina affectionately fastens it about Matt's neck.

The thought of stopping her doesn't even cross his mind, even as she takes out a chain as well, attaching it first to a small metal hoop on the side of her throne, then to the collar.

He can see her cock throbbing proudly as she stands up again, looking down at him with a mix of lust and triumph.

"That looks good on you, Matthew. I think I'll keep it on you even when your punishment is over."

Even though she's telling him he looks good with nothing but a collar on, Matt feels a hard to suppress surge of happiness at the compliment.

"...Thank you, Mistress." Feeling absurdly eager to please Regina, the words slip out of his mouth without thought, and his cock throbs as she gives him an approving smile.

"That's a good little cocksleeve. Keep it up and you'll be **** on my cock again in no time. But for now...I think I'll go let off some steam on one of my other toys. No reason I should have to wait just because you're being punished, isn't that right, Matthew?"

Once he meekly bows his head, letting out a submissive, but disappointed-sounding "yes Mistress...", she turns to leave, striding out of the room. Left alone, Matt's left horny and jealous, unable to stop picturing Regina roughly pounding one of her other slaves.