A Christmas Cumslut
You open up the present amazed that someone you treat so poorly would be so thoughtful. Inside the parcel is a plan leather box, a new watch you assume but how wrong you are.What you find inside is a collar, with your name on the tag. "It's just the right size for you, now try it on." You stare at her in amazement, this isn't the girl you easily manipulated yesterday, then again you aren't the same power hungry man.
You put the collar on and she summons you over before adding a lock to the collar "Now everyone will know your mine" she says smugly. "Now on your knees." You do as instructed. "Not stroke that cock and since it's Christmas I might let you have some relief.
You are flabbergasted by her but for some reason your gut instinct tell you not to question her authority.