Everyone has opened their gifts, except for me. You excitedly mention it's time for me to open my gift. It's something really special this year. After I open it, it's apparent that I'm a little confused as to what this device is. You explain that it's a chastity device. A cage for my tiny little beta penis. It keeps me from playing with myself without permission and makes getting an erection very uncomfortable. In this culture, all little penises like mine get locked up. "It really is a pathetic little penis. Stand up, pull your pants down to your ankles and show everyone. Stop being fussy and do it, hands behind your back. See? Tiny, useless. You will never satisfy any woman with that puny little thing, so we have to lock it away. That really is a cute little chastity device. Let's try it on you now. Stop sulking. Your step-sisters went through the trouble of picking that out just for you. You don't want to upset them, do you? Trust me, you don't." Give an explanation of how one day out of the month I'll get a chance to ask Step-Mom for permission to masturbate. That it will have to be supervised and controlled by either you or one of my kin, and that I'll have to properly dispose of my mess by eating it. Have me show off the device to everyone once I have it on. Maybe show me a little something to "make sure it's working properly" Get me and my step-sisters together for a photo, one of them holds up the key. "Awww, that'll be next year's Christmas card"